wasCSharpSQLite – Blame information for rev 1
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Rev | Author | Line No. | Line |
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1 | office | 1 | using System; |
2 | using System.Diagnostics; |
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3 | using System.Text; |
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4 | |||
5 | using u8 = System.Byte; |
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6 | using u32 = System.UInt32; |
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7 | |||
8 | namespace Community.CsharpSqlite |
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9 | { |
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10 | using sqlite3_value = Sqlite3.Mem; |
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11 | |||
12 | public partial class Sqlite3 |
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13 | { |
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14 | /* |
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15 | ** 2003 April 6 |
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16 | ** |
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17 | ** The author disclaims copyright to this source code. In place of |
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18 | ** a legal notice, here is a blessing: |
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19 | ** |
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20 | ** May you do good and not evil. |
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21 | ** May you find forgiveness for yourself and forgive others. |
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22 | ** May you share freely, never taking more than you give. |
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23 | ** |
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24 | ************************************************************************* |
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25 | ** This file contains code used to implement the ATTACH and DETACH commands. |
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26 | ************************************************************************* |
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27 | ** Included in SQLite3 port to C#-SQLite; 2008 Noah B Hart |
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28 | ** C#-SQLite is an independent reimplementation of the SQLite software library |
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29 | ** |
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30 | ** SQLITE_SOURCE_ID: 2011-06-23 19:49:22 4374b7e83ea0a3fbc3691f9c0c936272862f32f2 |
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31 | ** |
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32 | ************************************************************************* |
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33 | */ |
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34 | //#include "sqliteInt.h" |
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35 | |||
36 | #if !SQLITE_OMIT_ATTACH |
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37 | /* |
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38 | ** Resolve an expression that was part of an ATTACH or DETACH statement. This |
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39 | ** is slightly different from resolving a normal SQL expression, because simple |
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40 | ** identifiers are treated as strings, not possible column names or aliases. |
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41 | ** |
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42 | ** i.e. if the parser sees: |
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43 | ** |
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44 | ** ATTACH DATABASE abc AS def |
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45 | ** |
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46 | ** it treats the two expressions as literal strings 'abc' and 'def' instead of |
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47 | ** looking for columns of the same name. |
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48 | ** |
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49 | ** This only applies to the root node of pExpr, so the statement: |
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50 | ** |
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51 | ** ATTACH DATABASE abc||def AS 'db2' |
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52 | ** |
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53 | ** will fail because neither abc or def can be resolved. |
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54 | */ |
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55 | static int resolveAttachExpr( NameContext pName, Expr pExpr ) |
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56 | { |
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57 | int rc = SQLITE_OK; |
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58 | if ( pExpr != null ) |
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59 | { |
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60 | if ( pExpr.op != TK_ID ) |
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61 | { |
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62 | rc = sqlite3ResolveExprNames( pName, ref pExpr ); |
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63 | if ( rc == SQLITE_OK && sqlite3ExprIsConstant( pExpr ) == 0 ) |
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64 | { |
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65 | sqlite3ErrorMsg( pName.pParse, "invalid name: \"%s\"", pExpr.u.zToken ); |
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66 | return SQLITE_ERROR; |
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67 | } |
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68 | } |
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69 | else |
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70 | { |
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71 | pExpr.op = TK_STRING; |
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72 | } |
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73 | } |
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74 | return rc; |
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75 | } |
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76 | |||
77 | /* |
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78 | ** An SQL user-function registered to do the work of an ATTACH statement. The |
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79 | ** three arguments to the function come directly from an attach statement: |
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80 | ** |
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81 | ** ATTACH DATABASE x AS y KEY z |
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82 | ** |
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83 | ** SELECT sqlite_attach(x, y, z) |
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84 | ** |
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85 | ** If the optional "KEY z" syntax is omitted, an SQL NULL is passed as the |
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86 | ** third argument. |
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87 | */ |
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88 | static void attachFunc( |
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89 | sqlite3_context context, |
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90 | int NotUsed, |
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91 | sqlite3_value[] argv |
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92 | ) |
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93 | { |
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94 | int i; |
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95 | int rc = 0; |
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96 | sqlite3 db = sqlite3_context_db_handle( context ); |
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97 | string zName; |
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98 | string zFile; |
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99 | string zPath = string.Empty; |
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100 | string zErr = string.Empty; |
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101 | int flags; |
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102 | |||
103 | Db aNew = null; |
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104 | string zErrDyn = string.Empty; |
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105 | sqlite3_vfs pVfs = null; |
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106 | |||
107 | UNUSED_PARAMETER( NotUsed ); |
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108 | |||
109 | zFile = argv[0].z != null && ( argv[0].z.Length > 0 ) && argv[0].flags != MEM_Null ? sqlite3_value_text( argv[0] ) : string.Empty; |
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110 | zName = argv[1].z != null && ( argv[1].z.Length > 0 ) && argv[1].flags != MEM_Null ? sqlite3_value_text( argv[1] ) : string.Empty; |
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111 | //if( zFile==null ) zFile = string.Empty; |
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112 | //if ( zName == null ) zName = string.Empty; |
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113 | |||
114 | /* Check for the following errors: |
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115 | ** |
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116 | ** * Too many attached databases, |
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117 | ** * Transaction currently open |
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118 | ** * Specified database name already being used. |
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119 | */ |
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120 | if ( db.nDb >= db.aLimit[SQLITE_LIMIT_ATTACHED] + 2 ) |
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121 | { |
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122 | zErrDyn = sqlite3MPrintf( db, "too many attached databases - max %d", |
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123 | db.aLimit[SQLITE_LIMIT_ATTACHED] |
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124 | ); |
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125 | goto attach_error; |
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126 | } |
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127 | if ( 0 == db.autoCommit ) |
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128 | { |
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129 | zErrDyn = sqlite3MPrintf( db, "cannot ATTACH database within transaction" ); |
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130 | goto attach_error; |
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131 | } |
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132 | for ( i = 0; i < db.nDb; i++ ) |
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133 | { |
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134 | string z = db.aDb[i].zName; |
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135 | Debug.Assert( z != null && zName != null ); |
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136 | if ( z.Equals( zName, StringComparison.OrdinalIgnoreCase ) ) |
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137 | { |
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138 | zErrDyn = sqlite3MPrintf( db, "database %s is already in use", zName ); |
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139 | goto attach_error; |
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140 | } |
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141 | } |
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142 | |||
143 | /* Allocate the new entry in the db.aDb[] array and initialise the schema |
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144 | ** hash tables. |
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145 | */ |
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146 | /* Allocate the new entry in the db.aDb[] array and initialise the schema |
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147 | ** hash tables. |
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148 | */ |
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149 | //if( db.aDb==db.aDbStatic ){ |
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150 | // aNew = sqlite3DbMallocRaw(db, sizeof(db.aDb[0])*3 ); |
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151 | // if( aNew==0 ) return; |
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152 | // memcpy(aNew, db.aDb, sizeof(db.aDb[0])*2); |
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153 | //}else { |
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154 | if ( db.aDb.Length <= db.nDb ) |
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155 | Array.Resize( ref db.aDb, db.nDb + 1 );//aNew = sqlite3DbRealloc(db, db.aDb, sizeof(db.aDb[0])*(db.nDb+1) ); |
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156 | if ( db.aDb == null ) |
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157 | return; // if( aNew==0 ) return; |
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158 | //} |
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159 | db.aDb[db.nDb] = new Db();//db.aDb = aNew; |
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160 | aNew = db.aDb[db.nDb];//memset(aNew, 0, sizeof(*aNew)); |
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161 | // memset(aNew, 0, sizeof(*aNew)); |
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162 | |||
163 | /* Open the database file. If the btree is successfully opened, use |
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164 | ** it to obtain the database schema. At this point the schema may |
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165 | ** or may not be initialised. |
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166 | */ |
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167 | flags = (int)db.openFlags; |
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168 | rc = sqlite3ParseUri( db.pVfs.zName, zFile, ref flags, ref pVfs, ref zPath, ref zErr ); |
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169 | if ( rc != SQLITE_OK ) |
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170 | { |
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171 | //if ( rc == SQLITE_NOMEM ) |
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172 | //db.mallocFailed = 1; |
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173 | sqlite3_result_error( context, zErr, -1 ); |
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174 | //sqlite3_free( zErr ); |
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175 | return; |
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176 | } |
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177 | Debug.Assert( pVfs != null); |
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178 | flags |= SQLITE_OPEN_MAIN_DB; |
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179 | rc = sqlite3BtreeOpen( pVfs, zPath, db, ref aNew.pBt, 0, (int)flags ); |
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180 | //sqlite3_free( zPath ); |
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181 | |||
182 | db.nDb++; |
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183 | if ( rc == SQLITE_CONSTRAINT ) |
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184 | { |
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185 | rc = SQLITE_ERROR; |
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186 | zErrDyn = sqlite3MPrintf( db, "database is already attached" ); |
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187 | } |
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188 | else if ( rc == SQLITE_OK ) |
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189 | { |
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190 | Pager pPager; |
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191 | aNew.pSchema = sqlite3SchemaGet( db, aNew.pBt ); |
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192 | //if ( aNew.pSchema == null ) |
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193 | //{ |
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194 | // rc = SQLITE_NOMEM; |
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195 | //} |
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196 | //else |
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197 | if ( aNew.pSchema.file_format != 0 && aNew.pSchema.enc != ENC( db ) ) |
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198 | { |
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199 | zErrDyn = sqlite3MPrintf( db, |
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200 | "attached databases must use the same text encoding as main database" ); |
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201 | rc = SQLITE_ERROR; |
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202 | } |
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203 | pPager = sqlite3BtreePager( aNew.pBt ); |
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204 | sqlite3PagerLockingMode( pPager, db.dfltLockMode ); |
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205 | sqlite3BtreeSecureDelete( aNew.pBt, |
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206 | sqlite3BtreeSecureDelete( db.aDb[0].pBt, -1 ) ); |
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207 | } |
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208 | aNew.safety_level = 3; |
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209 | aNew.zName = zName;//sqlite3DbStrDup(db, zName); |
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210 | //if( rc==SQLITE_OK && aNew.zName==0 ){ |
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211 | // rc = SQLITE_NOMEM; |
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212 | //} |
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213 | |||
214 | #if SQLITE_HAS_CODEC |
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215 | if ( rc == SQLITE_OK ) |
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216 | { |
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217 | //extern int sqlite3CodecAttach(sqlite3*, int, const void*, int); |
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218 | //extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*); |
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219 | int nKey; |
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220 | string zKey; |
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221 | int t = sqlite3_value_type( argv[2] ); |
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222 | switch ( t ) |
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223 | { |
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224 | case SQLITE_INTEGER: |
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225 | case SQLITE_FLOAT: |
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226 | zErrDyn = "Invalid key value"; //sqlite3DbStrDup( db, "Invalid key value" ); |
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227 | rc = SQLITE_ERROR; |
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228 | break; |
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229 | |||
230 | case SQLITE_TEXT: |
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231 | case SQLITE_BLOB: |
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232 | nKey = sqlite3_value_bytes( argv[2] ); |
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233 | zKey = sqlite3_value_blob( argv[2] ).ToString(); // (char *)sqlite3_value_blob(argv[2]); |
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234 | rc = sqlite3CodecAttach( db, db.nDb - 1, zKey, nKey ); |
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235 | break; |
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236 | |||
237 | case SQLITE_NULL: |
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238 | /* No key specified. Use the key from the main database */ |
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239 | sqlite3CodecGetKey( db, 0, out zKey, out nKey ); //sqlite3CodecGetKey(db, 0, (void**)&zKey, nKey); |
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240 | if ( nKey > 0 || sqlite3BtreeGetReserve( db.aDb[0].pBt ) > 0 ) |
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241 | { |
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242 | rc = sqlite3CodecAttach( db, db.nDb - 1, zKey, nKey ); |
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243 | } |
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244 | break; |
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245 | } |
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246 | } |
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247 | #endif |
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248 | |||
249 | /* If the file was opened successfully, read the schema for the new database. |
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250 | ** If this fails, or if opening the file failed, then close the file and |
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251 | ** remove the entry from the db.aDb[] array. i.e. put everything back the way |
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252 | ** we found it. |
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253 | */ |
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254 | if ( rc == SQLITE_OK ) |
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255 | { |
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256 | sqlite3BtreeEnterAll( db ); |
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257 | rc = sqlite3Init( db, ref zErrDyn ); |
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258 | sqlite3BtreeLeaveAll( db ); |
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259 | } |
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260 | if ( rc != 0 ) |
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261 | { |
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262 | int iDb = db.nDb - 1; |
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263 | Debug.Assert( iDb >= 2 ); |
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264 | if ( db.aDb[iDb].pBt != null ) |
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265 | { |
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266 | sqlite3BtreeClose( ref db.aDb[iDb].pBt ); |
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267 | db.aDb[iDb].pBt = null; |
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268 | db.aDb[iDb].pSchema = null; |
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269 | } |
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270 | sqlite3ResetInternalSchema( db, -1 ); |
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271 | db.nDb = iDb; |
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272 | if ( rc == SQLITE_NOMEM || rc == SQLITE_IOERR_NOMEM ) |
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273 | { |
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274 | //// db.mallocFailed = 1; |
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275 | sqlite3DbFree( db, ref zErrDyn ); |
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276 | zErrDyn = sqlite3MPrintf( db, "out of memory" ); |
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277 | } |
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278 | else if ( zErrDyn.Length == 0 ) |
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279 | { |
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280 | zErrDyn = sqlite3MPrintf( db, "unable to open database: %s", zFile ); |
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281 | } |
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282 | goto attach_error; |
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283 | } |
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284 | |||
285 | return; |
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286 | |||
287 | attach_error: |
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288 | /* Return an error if we get here */ |
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289 | if ( zErrDyn.Length > 0 ) |
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290 | { |
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291 | sqlite3_result_error( context, zErrDyn, -1 ); |
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292 | sqlite3DbFree( db, ref zErrDyn ); |
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293 | } |
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294 | if ( rc != 0 ) |
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295 | sqlite3_result_error_code( context, rc ); |
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296 | } |
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297 | |||
298 | /* |
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299 | ** An SQL user-function registered to do the work of an DETACH statement. The |
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300 | ** three arguments to the function come directly from a detach statement: |
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301 | ** |
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302 | ** DETACH DATABASE x |
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303 | ** |
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304 | ** SELECT sqlite_detach(x) |
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305 | */ |
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306 | static void detachFunc( |
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307 | sqlite3_context context, |
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308 | int NotUsed, |
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309 | sqlite3_value[] argv |
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310 | ) |
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311 | { |
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312 | string zName = !string.IsNullOrEmpty(argv[0].z) ? sqlite3_value_text( argv[0] ) : string.Empty;//(sqlite3_value_text(argv[0]); |
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313 | sqlite3 db = sqlite3_context_db_handle( context ); |
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314 | int i; |
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315 | Db pDb = null; |
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316 | StringBuilder zErr = new StringBuilder( 200 ); |
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317 | |||
318 | UNUSED_PARAMETER( NotUsed ); |
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319 | |||
320 | zName = zName ?? string.Empty; |
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321 | for ( i = 0; i < db.nDb; i++ ) |
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322 | { |
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323 | pDb = db.aDb[i]; |
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324 | if ( pDb.pBt == null ) |
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325 | continue; |
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326 | if ( pDb.zName.Equals( zName, StringComparison.OrdinalIgnoreCase ) ) |
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327 | break; |
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328 | } |
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329 | |||
330 | if ( i >= db.nDb ) |
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331 | { |
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332 | sqlite3_snprintf( 200, zErr, "no such database: %s", zName ); |
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333 | goto detach_error; |
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334 | } |
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335 | if ( i < 2 ) |
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336 | { |
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337 | sqlite3_snprintf( 200, zErr, "cannot detach database %s", zName ); |
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338 | goto detach_error; |
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339 | } |
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340 | if ( 0 == db.autoCommit ) |
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341 | { |
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342 | sqlite3_snprintf( 200, zErr, |
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343 | "cannot DETACH database within transaction" ); |
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344 | goto detach_error; |
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345 | } |
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346 | if ( sqlite3BtreeIsInReadTrans( pDb.pBt ) || sqlite3BtreeIsInBackup( pDb.pBt ) ) |
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347 | { |
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348 | sqlite3_snprintf( 200, zErr, "database %s is locked", zName ); |
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349 | goto detach_error; |
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350 | } |
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351 | |||
352 | sqlite3BtreeClose( ref pDb.pBt ); |
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353 | pDb.pBt = null; |
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354 | pDb.pSchema = null; |
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355 | sqlite3ResetInternalSchema( db, -1 ); |
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356 | return; |
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357 | |||
358 | detach_error: |
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359 | sqlite3_result_error( context, zErr.ToString(), -1 ); |
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360 | } |
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361 | |||
362 | /* |
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363 | ** This procedure generates VDBE code for a single invocation of either the |
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364 | ** sqlite_detach() or sqlite_attach() SQL user functions. |
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365 | */ |
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366 | static void codeAttach( |
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367 | Parse pParse, /* The parser context */ |
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368 | int type, /* Either SQLITE_ATTACH or SQLITE_DETACH */ |
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369 | FuncDef pFunc, /* FuncDef wrapper for detachFunc() or attachFunc() */ |
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370 | Expr pAuthArg, /* Expression to pass to authorization callback */ |
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371 | Expr pFilename, /* Name of database file */ |
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372 | Expr pDbname, /* Name of the database to use internally */ |
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373 | Expr pKey /* Database key for encryption extension */ |
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374 | ) |
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375 | { |
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376 | NameContext sName; |
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377 | Vdbe v; |
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378 | sqlite3 db = pParse.db; |
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379 | int regArgs; |
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380 | |||
381 | sName = new NameContext();// memset( &sName, 0, sizeof(NameContext)); |
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382 | sName.pParse = pParse; |
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383 | |||
384 | if ( |
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385 | SQLITE_OK != resolveAttachExpr( sName, pFilename ) || |
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386 | SQLITE_OK != resolveAttachExpr( sName, pDbname ) || |
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387 | SQLITE_OK != resolveAttachExpr( sName, pKey ) |
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388 | ) |
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389 | { |
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390 | pParse.nErr++; |
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391 | goto attach_end; |
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392 | } |
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393 | |||
394 | #if !SQLITE_OMIT_AUTHORIZATION |
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395 | if( pAuthArg ){ |
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396 | char *zAuthArg; |
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397 | if( pAuthArg->op==TK_STRING ){ |
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398 | zAuthArg = pAuthArg->u.zToken; |
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399 | }else{ |
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400 | zAuthArg = 0; |
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401 | } |
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402 | int rc = sqlite3AuthCheck(pParse, type, zAuthArg, 0, 0); |
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403 | if(rc!=SQLITE_OK ){ |
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404 | goto attach_end; |
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405 | } |
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406 | } |
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407 | #endif //* SQLITE_OMIT_AUTHORIZATION */ |
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408 | |||
409 | v = sqlite3GetVdbe( pParse ); |
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410 | regArgs = sqlite3GetTempRange( pParse, 4 ); |
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411 | sqlite3ExprCode( pParse, pFilename, regArgs ); |
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412 | sqlite3ExprCode( pParse, pDbname, regArgs + 1 ); |
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413 | sqlite3ExprCode( pParse, pKey, regArgs + 2 ); |
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414 | |||
415 | Debug.Assert( v != null /*|| db.mallocFailed != 0 */ ); |
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416 | if ( v != null ) |
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417 | { |
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418 | sqlite3VdbeAddOp3( v, OP_Function, 0, regArgs + 3 - pFunc.nArg, regArgs + 3 ); |
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419 | Debug.Assert( pFunc.nArg == -1 || ( pFunc.nArg & 0xff ) == pFunc.nArg ); |
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420 | sqlite3VdbeChangeP5( v, (u8)( pFunc.nArg ) ); |
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421 | sqlite3VdbeChangeP4( v, -1, pFunc, P4_FUNCDEF ); |
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422 | |||
423 | /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this |
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424 | ** statement only). For DETACH, set it to false (expire all existing |
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425 | ** statements). |
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426 | */ |
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427 | sqlite3VdbeAddOp1( v, OP_Expire, ( type == SQLITE_ATTACH ) ? 1 : 0 ); |
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428 | } |
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429 | |||
430 | attach_end: |
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431 | sqlite3ExprDelete( db, ref pFilename ); |
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432 | sqlite3ExprDelete( db, ref pDbname ); |
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433 | sqlite3ExprDelete( db, ref pKey ); |
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434 | } |
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435 | |||
436 | /* |
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437 | ** Called by the parser to compile a DETACH statement. |
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438 | ** |
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439 | ** DETACH pDbname |
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440 | */ |
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441 | static FuncDef detach_func = new FuncDef( |
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442 | 1, /* nArg */ |
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443 | SQLITE_UTF8, /* iPrefEnc */ |
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444 | 0, /* flags */ |
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445 | null, /* pUserData */ |
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446 | null, /* pNext */ |
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447 | detachFunc, /* xFunc */ |
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448 | null, /* xStep */ |
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449 | null, /* xFinalize */ |
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450 | "sqlite_detach", /* zName */ |
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451 | null, /* pHash */ |
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452 | null /* pDestructor */ |
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453 | ); |
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454 | static void sqlite3Detach( Parse pParse, Expr pDbname ) |
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455 | { |
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456 | codeAttach( pParse, SQLITE_DETACH, detach_func, pDbname, null, null, pDbname ); |
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457 | } |
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458 | |||
459 | /* |
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460 | ** Called by the parser to compile an ATTACH statement. |
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461 | ** |
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462 | ** ATTACH p AS pDbname KEY pKey |
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463 | */ |
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464 | static FuncDef attach_func = new FuncDef( |
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465 | 3, /* nArg */ |
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466 | SQLITE_UTF8, /* iPrefEnc */ |
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467 | 0, /* flags */ |
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468 | null, /* pUserData */ |
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469 | null, /* pNext */ |
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470 | attachFunc, /* xFunc */ |
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471 | null, /* xStep */ |
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472 | null, /* xFinalize */ |
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473 | "sqlite_attach", /* zName */ |
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474 | null, /* pHash */ |
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475 | null /* pDestructor */ |
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476 | ); |
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477 | static void sqlite3Attach( Parse pParse, Expr p, Expr pDbname, Expr pKey ) |
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478 | { |
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479 | codeAttach( pParse, SQLITE_ATTACH, attach_func, p, p, pDbname, pKey ); |
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480 | } |
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481 | #endif // * SQLITE_OMIT_ATTACH */ |
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482 | |||
483 | /* |
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484 | ** Initialize a DbFixer structure. This routine must be called prior |
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485 | ** to passing the structure to one of the sqliteFixAAAA() routines below. |
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486 | ** |
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487 | ** The return value indicates whether or not fixation is required. TRUE |
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488 | ** means we do need to fix the database references, FALSE means we do not. |
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489 | */ |
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490 | static int sqlite3FixInit( |
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491 | DbFixer pFix, /* The fixer to be initialized */ |
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492 | Parse pParse, /* Error messages will be written here */ |
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493 | int iDb, /* This is the database that must be used */ |
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494 | string zType, /* "view", "trigger", or "index" */ |
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495 | Token pName /* Name of the view, trigger, or index */ |
||
496 | ) |
||
497 | { |
||
498 | sqlite3 db; |
||
499 | |||
500 | if ( NEVER( iDb < 0 ) || iDb == 1 ) |
||
501 | return 0; |
||
502 | db = pParse.db; |
||
503 | Debug.Assert( db.nDb > iDb ); |
||
504 | pFix.pParse = pParse; |
||
505 | pFix.zDb = db.aDb[iDb].zName; |
||
506 | pFix.zType = zType; |
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507 | pFix.pName = pName; |
||
508 | return 1; |
||
509 | } |
||
510 | |||
511 | /* |
||
512 | ** The following set of routines walk through the parse tree and assign |
||
513 | ** a specific database to all table references where the database name |
||
514 | ** was left unspecified in the original SQL statement. The pFix structure |
||
515 | ** must have been initialized by a prior call to sqlite3FixInit(). |
||
516 | ** |
||
517 | ** These routines are used to make sure that an index, trigger, or |
||
518 | ** view in one database does not refer to objects in a different database. |
||
519 | ** (Exception: indices, triggers, and views in the TEMP database are |
||
520 | ** allowed to refer to anything.) If a reference is explicitly made |
||
521 | ** to an object in a different database, an error message is added to |
||
522 | ** pParse.zErrMsg and these routines return non-zero. If everything |
||
523 | ** checks out, these routines return 0. |
||
524 | */ |
||
525 | static int sqlite3FixSrcList( |
||
526 | DbFixer pFix, /* Context of the fixation */ |
||
527 | SrcList pList /* The Source list to check and modify */ |
||
528 | ) |
||
529 | { |
||
530 | int i; |
||
531 | string zDb; |
||
532 | SrcList_item pItem; |
||
533 | |||
534 | if ( NEVER( pList == null ) ) |
||
535 | return 0; |
||
536 | zDb = pFix.zDb; |
||
537 | for ( i = 0; i < pList.nSrc; i++ ) |
||
538 | {//, pItem++){ |
||
539 | pItem = pList.a[i]; |
||
540 | if ( pItem.zDatabase == null ) |
||
541 | { |
||
542 | pItem.zDatabase = zDb;// sqlite3DbStrDup( pFix.pParse.db, zDb ); |
||
543 | } |
||
544 | else if ( !pItem.zDatabase.Equals( zDb ,StringComparison.OrdinalIgnoreCase ) ) |
||
545 | { |
||
546 | sqlite3ErrorMsg( pFix.pParse, |
||
547 | "%s %T cannot reference objects in database %s", |
||
548 | pFix.zType, pFix.pName, pItem.zDatabase ); |
||
549 | return 1; |
||
550 | } |
||
551 | #if !SQLITE_OMIT_VIEW || !SQLITE_OMIT_TRIGGER |
||
552 | if ( sqlite3FixSelect( pFix, pItem.pSelect ) != 0 ) |
||
553 | return 1; |
||
554 | if ( sqlite3FixExpr( pFix, pItem.pOn ) != 0 ) |
||
555 | return 1; |
||
556 | #endif |
||
557 | } |
||
558 | return 0; |
||
559 | } |
||
560 | #if !SQLITE_OMIT_VIEW || !SQLITE_OMIT_TRIGGER |
||
561 | static int sqlite3FixSelect( |
||
562 | DbFixer pFix, /* Context of the fixation */ |
||
563 | Select pSelect /* The SELECT statement to be fixed to one database */ |
||
564 | ) |
||
565 | { |
||
566 | while ( pSelect != null ) |
||
567 | { |
||
568 | if ( sqlite3FixExprList( pFix, pSelect.pEList ) != 0 ) |
||
569 | { |
||
570 | return 1; |
||
571 | } |
||
572 | if ( sqlite3FixSrcList( pFix, pSelect.pSrc ) != 0 ) |
||
573 | { |
||
574 | return 1; |
||
575 | } |
||
576 | if ( sqlite3FixExpr( pFix, pSelect.pWhere ) != 0 ) |
||
577 | { |
||
578 | return 1; |
||
579 | } |
||
580 | if ( sqlite3FixExpr( pFix, pSelect.pHaving ) != 0 ) |
||
581 | { |
||
582 | return 1; |
||
583 | } |
||
584 | pSelect = pSelect.pPrior; |
||
585 | } |
||
586 | return 0; |
||
587 | } |
||
588 | static int sqlite3FixExpr( |
||
589 | DbFixer pFix, /* Context of the fixation */ |
||
590 | Expr pExpr /* The expression to be fixed to one database */ |
||
591 | ) |
||
592 | { |
||
593 | while ( pExpr != null ) |
||
594 | { |
||
595 | if ( ExprHasAnyProperty( pExpr, EP_TokenOnly ) ) |
||
596 | break; |
||
597 | if ( ExprHasProperty( pExpr, EP_xIsSelect ) ) |
||
598 | { |
||
599 | if ( sqlite3FixSelect( pFix, pExpr.x.pSelect ) != 0 ) |
||
600 | return 1; |
||
601 | } |
||
602 | else |
||
603 | { |
||
604 | if ( sqlite3FixExprList( pFix, pExpr.x.pList ) != 0 ) |
||
605 | return 1; |
||
606 | } |
||
607 | if ( sqlite3FixExpr( pFix, pExpr.pRight ) != 0 ) |
||
608 | { |
||
609 | return 1; |
||
610 | } |
||
611 | pExpr = pExpr.pLeft; |
||
612 | } |
||
613 | return 0; |
||
614 | } |
||
615 | static int sqlite3FixExprList( |
||
616 | DbFixer pFix, /* Context of the fixation */ |
||
617 | ExprList pList /* The expression to be fixed to one database */ |
||
618 | ) |
||
619 | { |
||
620 | int i; |
||
621 | ExprList_item pItem; |
||
622 | if ( pList == null ) |
||
623 | return 0; |
||
624 | for ( i = 0; i < pList.nExpr; i++ )//, pItem++ ) |
||
625 | { |
||
626 | pItem = pList.a[i]; |
||
627 | if ( sqlite3FixExpr( pFix, pItem.pExpr ) != 0 ) |
||
628 | { |
||
629 | return 1; |
||
630 | } |
||
631 | } |
||
632 | return 0; |
||
633 | } |
||
634 | #endif |
||
635 | |||
636 | #if !SQLITE_OMIT_TRIGGER |
||
637 | static int sqlite3FixTriggerStep( |
||
638 | DbFixer pFix, /* Context of the fixation */ |
||
639 | TriggerStep pStep /* The trigger step be fixed to one database */ |
||
640 | ) |
||
641 | { |
||
642 | while ( pStep != null ) |
||
643 | { |
||
644 | if ( sqlite3FixSelect( pFix, pStep.pSelect ) != 0 ) |
||
645 | { |
||
646 | return 1; |
||
647 | } |
||
648 | if ( sqlite3FixExpr( pFix, pStep.pWhere ) != 0 ) |
||
649 | { |
||
650 | return 1; |
||
651 | } |
||
652 | if ( sqlite3FixExprList( pFix, pStep.pExprList ) != 0 ) |
||
653 | { |
||
654 | return 1; |
||
655 | } |
||
656 | pStep = pStep.pNext; |
||
657 | } |
||
658 | return 0; |
||
659 | } |
||
660 | #endif |
||
661 | |||
662 | } |
||
663 | } |