/*
* Copyright (c) 2007 David Crawshaw <david@zentus.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package org.sqlite;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.RowIdLifetime;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Struct;
import java.sql.Types;
class MetaData implements DatabaseMetaData
{
private Connection conn;
private PreparedStatement
getTables = null,
getTableTypes = null,
getTypeInfo = null,
getCrossReference = null,
getCatalogs = null,
getSchemas = null,
getUDTs = null,
getColumnsTblName = null,
getSuperTypes = null,
getSuperTables = null,
getTablePrivileges = null,
getExportedKeys = null,
getImportedKeys = null,
getIndexInfo = null,
getProcedures = null,
getProcedureColumns = null,
getAttributes = null,
getBestRowIdentifier = null,
getVersionColumns = null,
getColumnPrivileges = null;
/** Used by PrepStmt to save generating a new statement every call. */
private PreparedStatement getGeneratedKeys = null;
MetaData(Connection conn) { this.conn = conn; }
void checkOpen() throws SQLException {
if (conn == null) throw new SQLException("connection closed"); }
synchronized void close() throws SQLException {
if (conn == null) return;
try {
if (getTables != null) getTables.close();
if (getTableTypes != null) getTableTypes.close();
if (getTypeInfo != null) getTypeInfo.close();
if (getCrossReference != null) getCrossReference.close();
if (getCatalogs != null) getCatalogs.close();
if (getSchemas != null) getSchemas.close();
if (getUDTs != null) getUDTs.close();
if (getColumnsTblName != null) getColumnsTblName.close();
if (getSuperTypes != null) getSuperTypes.close();
if (getSuperTables != null) getSuperTables.close();
if (getTablePrivileges != null) getTablePrivileges.close();
if (getExportedKeys != null) getExportedKeys.close();
if (getProcedures != null) getProcedures.close();
if (getProcedureColumns != null) getProcedureColumns.close();
if (getAttributes != null) getAttributes.close();
if (getBestRowIdentifier != null) getBestRowIdentifier.close();
if (getVersionColumns != null) getVersionColumns.close();
if (getColumnPrivileges != null) getColumnPrivileges.close();
if (getGeneratedKeys != null) getGeneratedKeys.close();
getTables = null;
getTableTypes = null;
getTypeInfo = null;
getCrossReference = null;
getCatalogs = null;
getSchemas = null;
getUDTs = null;
getColumnsTblName = null;
getSuperTypes = null;
getSuperTables = null;
getTablePrivileges = null;
getExportedKeys = null;
getProcedures = null;
getProcedureColumns = null;
getAttributes = null;
getBestRowIdentifier = null;
getVersionColumns = null;
getColumnPrivileges = null;
getGeneratedKeys = null;
} finally {
conn = null;
}
}
public Connection getConnection() { return conn; }
public int getDatabaseMajorVersion() { return 3; }
public int getDatabaseMinorVersion() { return 0; }
public int getDriverMajorVersion() { return 1; }
public int getDriverMinorVersion() { return 1; }
public int getJDBCMajorVersion() { return 2; }
public int getJDBCMinorVersion() { return 1; }
public int getDefaultTransactionIsolation()
{ return Connection.TRANSACTION_SERIALIZABLE; }
public int getMaxBinaryLiteralLength() { return 0; }
public int getMaxCatalogNameLength() { return 0; }
public int getMaxCharLiteralLength() { return 0; }
public int getMaxColumnNameLength() { return 0; }
public int getMaxColumnsInGroupBy() { return 0; }
public int getMaxColumnsInIndex() { return 0; }
public int getMaxColumnsInOrderBy() { return 0; }
public int getMaxColumnsInSelect() { return 0; }
public int getMaxColumnsInTable() { return 0; }
public int getMaxConnections() { return 0; }
public int getMaxCursorNameLength() { return 0; }
public int getMaxIndexLength() { return 0; }
public int getMaxProcedureNameLength() { return 0; }
public int getMaxRowSize() { return 0; }
public int getMaxSchemaNameLength() { return 0; }
public int getMaxStatementLength() { return 0; }
public int getMaxStatements() { return 0; }
public int getMaxTableNameLength() { return 0; }
public int getMaxTablesInSelect() { return 0; }
public int getMaxUserNameLength() { return 0; }
public int getResultSetHoldability()
{ return ResultSet.CLOSE_CURSORS_AT_COMMIT; }
public int getSQLStateType() { return sqlStateSQL99; }
public String getDatabaseProductName() { return "SQLite"; }
public String getDatabaseProductVersion() throws SQLException {
return "not_implemented";
}
public String getDriverName() { return "SQLiteJDBC"; }
public String getDriverVersion() { return "not_implemented"; }
public String getExtraNameCharacters() { return ""; }
public String getCatalogSeparator() { return "."; }
public String getCatalogTerm() { return "catalog"; }
public String getSchemaTerm() { return "schema"; }
public String getProcedureTerm() { return "not_implemented"; }
public String getSearchStringEscape() { return null; }
public String getIdentifierQuoteString() { return " "; }
public String getSQLKeywords() { return ""; }
public String getNumericFunctions() { return ""; }
public String getStringFunctions() { return ""; }
public String getSystemFunctions() { return ""; }
public String getTimeDateFunctions() { return ""; }
public String getURL() { return "not_implemented"; }
public String getUserName() { return null; }
public boolean allProceduresAreCallable() { return false; }
public boolean allTablesAreSelectable() { return true; }
public boolean dataDefinitionCausesTransactionCommit() { return false; }
public boolean dataDefinitionIgnoredInTransactions() { return false; }
public boolean doesMaxRowSizeIncludeBlobs() { return false; }
public boolean deletesAreDetected(int type) { return false; }
public boolean insertsAreDetected(int type) { return false; }
public boolean isCatalogAtStart() { return true; }
public boolean locatorsUpdateCopy() { return false; }
public boolean nullPlusNonNullIsNull() { return true; }
public boolean nullsAreSortedAtEnd() { return !nullsAreSortedAtStart(); }
public boolean nullsAreSortedAtStart() { return true; }
public boolean nullsAreSortedHigh() { return true; }
public boolean nullsAreSortedLow() { return !nullsAreSortedHigh(); }
public boolean othersDeletesAreVisible(int type) { return false; }
public boolean othersInsertsAreVisible(int type) { return false; }
public boolean othersUpdatesAreVisible(int type) { return false; }
public boolean ownDeletesAreVisible(int type) { return false; }
public boolean ownInsertsAreVisible(int type) { return false; }
public boolean ownUpdatesAreVisible(int type) { return false; }
public boolean storesLowerCaseIdentifiers() { return false; }
public boolean storesLowerCaseQuotedIdentifiers() { return false; }
public boolean storesMixedCaseIdentifiers() { return true; }
public boolean storesMixedCaseQuotedIdentifiers() { return false; }
public boolean storesUpperCaseIdentifiers() { return false; }
public boolean storesUpperCaseQuotedIdentifiers() { return false; }
public boolean supportsAlterTableWithAddColumn() { return false; }
public boolean supportsAlterTableWithDropColumn() { return false; }
public boolean supportsANSI92EntryLevelSQL() { return false; }
public boolean supportsANSI92FullSQL() { return false; }
public boolean supportsANSI92IntermediateSQL() { return false; }
public boolean supportsBatchUpdates() { return true; }
public boolean supportsCatalogsInDataManipulation() { return false; }
public boolean supportsCatalogsInIndexDefinitions() { return false; }
public boolean supportsCatalogsInPrivilegeDefinitions() { return false; }
public boolean supportsCatalogsInProcedureCalls() { return false; }
public boolean supportsCatalogsInTableDefinitions() { return false; }
public boolean supportsColumnAliasing() { return true; }
public boolean supportsConvert() { return false; }
public boolean supportsConvert(int fromType, int toType) { return false; }
public boolean supportsCorrelatedSubqueries() { return false; }
public boolean supportsDataDefinitionAndDataManipulationTransactions()
{ return true; }
public boolean supportsDataManipulationTransactionsOnly() { return false; }
public boolean supportsDifferentTableCorrelationNames() { return false; }
public boolean supportsExpressionsInOrderBy() { return true; }
public boolean supportsMinimumSQLGrammar() { return true; }
public boolean supportsCoreSQLGrammar() { return true; }
public boolean supportsExtendedSQLGrammar() { return false; }
public boolean supportsLimitedOuterJoins() { return true; }
public boolean supportsFullOuterJoins() { return false; }
public boolean supportsGetGeneratedKeys() { return false; }
public boolean supportsGroupBy() { return true; }
public boolean supportsGroupByBeyondSelect() { return false; }
public boolean supportsGroupByUnrelated() { return false; }
public boolean supportsIntegrityEnhancementFacility() { return false; }
public boolean supportsLikeEscapeClause() { return false; }
public boolean supportsMixedCaseIdentifiers() { return true; }
public boolean supportsMixedCaseQuotedIdentifiers() { return false; }
public boolean supportsMultipleOpenResults() { return false; }
public boolean supportsMultipleResultSets() { return false; }
public boolean supportsMultipleTransactions() { return true; }
public boolean supportsNamedParameters() { return true; }
public boolean supportsNonNullableColumns() { return true; }
public boolean supportsOpenCursorsAcrossCommit() { return false; }
public boolean supportsOpenCursorsAcrossRollback() { return false; }
public boolean supportsOpenStatementsAcrossCommit() { return false; }
public boolean supportsOpenStatementsAcrossRollback() { return false; }
public boolean supportsOrderByUnrelated() { return false; }
public boolean supportsOuterJoins() { return true; }
public boolean supportsPositionedDelete() { return false; }
public boolean supportsPositionedUpdate() { return false; }
public boolean supportsResultSetConcurrency(int t, int c)
{ return t == ResultSet.TYPE_FORWARD_ONLY
&& c == ResultSet.CONCUR_READ_ONLY; }
public boolean supportsResultSetHoldability(int h)
{ return h == ResultSet.CLOSE_CURSORS_AT_COMMIT; }
public boolean supportsResultSetType(int t)
{ return t == ResultSet.TYPE_FORWARD_ONLY; }
public boolean supportsSavepoints() { return false; }
public boolean supportsSchemasInDataManipulation() { return false; }
public boolean supportsSchemasInIndexDefinitions() { return false; }
public boolean supportsSchemasInPrivilegeDefinitions() { return false; }
public boolean supportsSchemasInProcedureCalls() { return false; }
public boolean supportsSchemasInTableDefinitions() { return false; }
public boolean supportsSelectForUpdate() { return false; }
public boolean supportsStatementPooling() { return false; }
public boolean supportsStoredProcedures() { return false; }
public boolean supportsSubqueriesInComparisons() { return false; }
public boolean supportsSubqueriesInExists() { return true; } // TODO: check
public boolean supportsSubqueriesInIns() { return true; } // TODO: check
public boolean supportsSubqueriesInQuantifieds() { return false; }
public boolean supportsTableCorrelationNames() { return false; }
public boolean supportsTransactionIsolationLevel(int level)
{ return level == Connection.TRANSACTION_SERIALIZABLE; }
public boolean supportsTransactions() { return true; }
public boolean supportsUnion() { return true; }
public boolean supportsUnionAll() { return true; }
public boolean updatesAreDetected(int type) { return false; }
public boolean usesLocalFilePerTable() { return false; }
public boolean usesLocalFiles() { return true; }
public boolean isReadOnly() throws SQLException
{ return conn.isReadOnly(); }
public ResultSet getAttributes(String c, String s, String t, String a)
throws SQLException {
if (getAttributes == null) getAttributes = conn.prepareStatement(
"select "
+ "null as TYPE_CAT, "
+ "null as TYPE_SCHEM, "
+ "null as TYPE_NAME, "
+ "null as ATTR_NAME, "
+ "null as DATA_TYPE, "
+ "null as ATTR_TYPE_NAME, "
+ "null as ATTR_SIZE, "
+ "null as DECIMAL_DIGITS, "
+ "null as NUM_PREC_RADIX, "
+ "null as NULLABLE, "
+ "null as REMARKS, "
+ "null as ATTR_DEF, "
+ "null as SQL_DATA_TYPE, "
+ "null as SQL_DATETIME_SUB, "
+ "null as CHAR_OCTET_LENGTH, "
+ "null as ORDINAL_POSITION, "
+ "null as IS_NULLABLE, "
+ "null as SCOPE_CATALOG, "
+ "null as SCOPE_SCHEMA, "
+ "null as SCOPE_TABLE, "
+ "null as SOURCE_DATA_TYPE limit 0;");
return getAttributes.executeQuery();
}
public ResultSet getBestRowIdentifier(String c, String s, String t,
int scope, boolean n) throws SQLException {
if (getBestRowIdentifier == null)
getBestRowIdentifier = conn.prepareStatement(
"select "
+ "null as SCOPE, "
+ "null as COLUMN_NAME, "
+ "null as DATA_TYPE, "
+ "null as TYPE_NAME, "
+ "null as COLUMN_SIZE, "
+ "null as BUFFER_LENGTH, "
+ "null as DECIMAL_DIGITS, "
+ "null as PSEUDO_COLUMN limit 0;");
return getBestRowIdentifier.executeQuery();
}
public ResultSet getColumnPrivileges(String c, String s, String t,
String colPat)
throws SQLException {
if (getColumnPrivileges == null)
getColumnPrivileges = conn.prepareStatement(
"select "
+ "null as TABLE_CAT, "
+ "null as TABLE_SCHEM, "
+ "null as TABLE_NAME, "
+ "null as COLUMN_NAME, "
+ "null as GRANTOR, "
+ "null as GRANTEE, "
+ "null as PRIVILEGE, "
+ "null as IS_GRANTABLE limit 0;");
return getColumnPrivileges.executeQuery();
}
public ResultSet getColumns(String c, String s, String tbl, String colPat)
throws SQLException {
Statement stat = conn.createStatement();
ResultSet rs;
String sql;
checkOpen();
if (getColumnsTblName == null)
getColumnsTblName = conn.prepareStatement(
"select tbl_name from sqlite_master where tbl_name like ?;");
// determine exact table name
getColumnsTblName.setString(1, tbl);
rs = getColumnsTblName.executeQuery();
if (!rs.next())
return rs;
tbl = rs.getString(1);
rs.close();
sql = "select "
+ "null as TABLE_CAT, "
+ "null as TABLE_SCHEM, "
+ "'" + escape(tbl) + "' as TABLE_NAME, "
+ "cn as COLUMN_NAME, "
+ "ct as DATA_TYPE, "
+ "tn as TYPE_NAME, "
+ "2000000000 as COLUMN_SIZE, "
+ "2000000000 as BUFFER_LENGTH, "
+ "10 as DECIMAL_DIGITS, "
+ "10 as NUM_PREC_RADIX, "
+ "colnullable as NULLABLE, "
+ "null as REMARKS, "
+ "null as COLUMN_DEF, "
+ "0 as SQL_DATA_TYPE, "
+ "0 as SQL_DATETIME_SUB, "
+ "2000000000 as CHAR_OCTET_LENGTH, "
+ "ordpos as ORDINAL_POSITION, "
+ "(case colnullable when 0 then 'N' when 1 then 'Y' else '' end)"
+ " as IS_NULLABLE, "
+ "null as SCOPE_CATLOG, "
+ "null as SCOPE_SCHEMA, "
+ "null as SCOPE_TABLE, "
+ "null as SOURCE_DATA_TYPE from (";
// the command "pragma table_info('tablename')" does not embed
// like a normal select statement so we must extract the information
// and then build a resultset from unioned select statements
rs = stat.executeQuery("pragma table_info ('"+escape(tbl)+"');");
boolean colFound = false;
for (int i=0; rs.next(); i++) {
String colName = rs.getString(2);
String colType = rs.getString(3);
String colNotNull = rs.getString(4);
int colNullable = 2;
if (colNotNull != null) colNullable = colNotNull.equals("0") ? 1:0;
if (colFound) sql += " union all ";
colFound = true;
colType = colType == null ? "TEXT" : colType.toUpperCase();
int colJavaType = -1;
if (colType.startsWith("INT") || colType.startsWith("INTEGER"))
colJavaType = Types.INTEGER;
else if (colType.startsWith("TEXT"))
colJavaType = Types.VARCHAR;
else if (colType.startsWith("FLOAT"))
colJavaType = Types.FLOAT;
else if (colType.startsWith("DECIMAL"))
colJavaType = Types.DECIMAL;
else
colJavaType = Types.VARCHAR;
sql += "select "
+ i + " as ordpos, "
+ colNullable + " as colnullable, '"
+ colJavaType + "' as ct, '"
+ escape(colName) + "' as cn, '"
+ escape(colType) + "' as tn";
if (colPat != null)
sql += " where upper(cn) like upper('" + escape(colPat) + "')";
}
sql += colFound ? ");" :
"select null as ordpos, null as colnullable, "
+ "null as cn, null as tn) limit 0;";
rs.close();
return stat.executeQuery(sql);
}
public ResultSet getCrossReference(String pc, String ps, String pt,
String fc, String fs, String ft)
throws SQLException {
if (getCrossReference == null)
getCrossReference = conn.prepareStatement("select "
+ "null as PKTABLE_CAT, "
+ "null as PKTABLE_SCHEM, "
+ "null as PKTABLE_NAME, "
+ "null as PKCOLUMN_NAME, "
+ "null as FKTABLE_CAT, "
+ "null as FKTABLE_SCHEM, "
+ "null as FKTABLE_NAME, "
+ "null as FKCOLUMN_NAME, "
+ "null as KEY_SEQ, "
+ "null as UPDATE_RULE, "
+ "null as DELETE_RULE, "
+ "null as FK_NAME, "
+ "null as PK_NAME, "
+ "null as DEFERRABILITY "
+ "limit 0;");
getCrossReference.clearParameters();
return getCrossReference.executeQuery();
}
public ResultSet getSchemas() throws SQLException {
if (getSchemas == null) getSchemas = conn.prepareStatement("select "
+ "null as TABLE_SCHEM, "
+ "null as TABLE_CATALOG "
+ "limit 0;");
getSchemas.clearParameters();
return getSchemas.executeQuery();
}
public ResultSet getCatalogs() throws SQLException {
if (getCatalogs == null) getCatalogs = conn.prepareStatement(
"select null as TABLE_CAT limit 0;");
getCatalogs.clearParameters();
return getCatalogs.executeQuery();
}
public ResultSet getPrimaryKeys(String c, String s, String table)
throws SQLException {
String sql;
ResultSet rs;
Statement stat = conn.createStatement();
rs = stat.executeQuery("pragma table_info('"+escape(table)+"');");
sql = "select "
+ "null as TABLE_CAT, "
+ "null as TABLE_SCHEM, "
+ "'" + escape(table) + "' as TABLE_NAME, "
+ "cn as COLUMN_NAME, "
+ "0 as KEY_SEQ, "
+ "null as PK_NAME from (";
int i;
for (i=0; rs.next(); i++) {
String colName = rs.getString(2);
if (!rs.getBoolean(6)) { i--; continue; }
if (i > 0) sql += " union all ";
sql += "select '" + escape(colName) + "' as cn";
}
sql += i == 0 ? "select null as cn) limit 0;" : ");";
rs.close();
return stat.executeQuery(sql);
}
public ResultSet getExportedKeys(String c, String s, String t)
throws SQLException {
if (getExportedKeys == null) getExportedKeys = conn.prepareStatement(
"select "
+ "null as PKTABLE_CAT, "
+ "null as PKTABLE_SCHEM, "
+ "null as PKTABLE_NAME, "
+ "null as PKCOLUMN_NAME, "
+ "null as FKTABLE_CAT, "
+ "null as FKTABLE_SCHEM, "
+ "null as FKTABLE_NAME, "
+ "null as FKCOLUMN_NAME, "
+ "null as KEY_SEQ, "
+ "null as UPDATE_RULE, "
+ "null as DELETE_RULE, "
+ "null as FK_NAME, "
+ "null as PK_NAME, "
+ "null as DEFERRABILITY limit 0;");
return getExportedKeys.executeQuery();
}
public ResultSet getImportedKeys(String c, String s, String t)
throws SQLException {
return getExportedKeys(c, s, t);
// throw new SQLException("not yet implemented");
}
public ResultSet getIndexInfo(String c, String s, String t,
boolean u, boolean approximate)
throws SQLException {
if (getIndexInfo == null) getIndexInfo = conn.prepareStatement(
"select "
+ "null as TABLE_CATALOG, "
+ "null as TABLE_SCHEMA, "
+ "null as TABLE_NAME, "
+ "null as NON_UNIQUE, "
+ "null as INDEX_QUALIFIER, "
+ "null as INDEX_NAME, "
+ "null as TYPE, "
+ "null as ORDINAL_POSITION, "
+ "null as COLUMN_NAME, "
+ "null as UPDATE_RULE, "
+ "null as ASC_OR_DESC, "
+ "null as CARDINALITY, "
+ "null as PAGES, "
+ "null as FILTER_CONDITION limit 0;");
return getIndexInfo.executeQuery();
// String dbCatalog = indexInformation.getString("TABLE_CATALOG");
// String dbSchema = indexInformation.getString("TABLE_SCHEMA");
// String dbTableName = indexInformation.getString("TABLE_NAME");
// boolean dbNoneUnique = indexInformation.getBoolean("NON_UNIQUE");
// String dbIndexQualifier = indexInformation.getString("INDEX_QUALIFIER");
// String dbIndexName = indexInformation.getString("INDEX_NAME");
// short dbType = indexInformation.getShort("TYPE");
// short dbOrdinalPosition = indexInformation.getShort("ORDINAL_POSITION");
// String dbColumnName = indexInformation.getString("COLUMN_NAME");
// String dbAscOrDesc = indexInformation.getString("ASC_OR_DESC");
// int dbCardinality = indexInformation.getInt("CARDINALITY");
// int dbPages = indexInformation.getInt("PAGES");
// String dbFilterCondition = indexInformation.getString("FILTER_CONDITION");
// throw new SQLException("not yet implemented");
}
public ResultSet getProcedureColumns(String c, String s, String p,
String colPat)
throws SQLException {
if (getProcedures == null) getProcedureColumns = conn.prepareStatement(
"select "
+ "null as PROCEDURE_CAT, "
+ "null as PROCEDURE_SCHEM, "
+ "null as PROCEDURE_NAME, "
+ "null as COLUMN_NAME, "
+ "null as COLUMN_TYPE, "
+ "null as DATA_TYPE, "
+ "null as TYPE_NAME, "
+ "null as PRECISION, "
+ "null as LENGTH, "
+ "null as SCALE, "
+ "null as RADIX, "
+ "null as NULLABLE, "
+ "null as REMARKS limit 0;");
return getProcedureColumns.executeQuery();
}
public ResultSet getProcedures(String c, String s, String p)
throws SQLException {
if (getProcedures == null) getProcedures = conn.prepareStatement(
"select "
+ "null as PROCEDURE_CAT, "
+ "null as PROCEDURE_SCHEM, "
+ "null as PROCEDURE_NAME, "
+ "null as UNDEF1, "
+ "null as UNDEF2, "
+ "null as UNDEF3, "
+ "null as REMARKS, "
+ "null as PROCEDURE_TYPE limit 0;");
return getProcedures.executeQuery();
}
public ResultSet getSuperTables(String c, String s, String t)
throws SQLException {
if (getSuperTables == null) getSuperTables = conn.prepareStatement(
"select "
+ "null as TABLE_CAT, "
+ "null as TABLE_SCHEM, "
+ "null as TABLE_NAME, "
+ "null as SUPERTABLE_NAME limit 0;");
return getSuperTables.executeQuery();
}
public ResultSet getSuperTypes(String c, String s, String t)
throws SQLException {
if (getSuperTypes == null) getSuperTypes = conn.prepareStatement(
"select "
+ "null as TYPE_CAT, "
+ "null as TYPE_SCHEM, "
+ "null as TYPE_NAME, "
+ "null as SUPERTYPE_CAT, "
+ "null as SUPERTYPE_SCHEM, "
+ "null as SUPERTYPE_NAME limit 0;");
return getSuperTypes.executeQuery();
}
public ResultSet getTablePrivileges(String c, String s, String t)
throws SQLException {
if (getTablePrivileges == null)
getTablePrivileges = conn.prepareStatement(
"select "
+ "null as TABLE_CAT, "
+ "null as TABLE_SCHEM, "
+ "null as TABLE_NAME, "
+ "null as GRANTOR, "
+ "null as GRANTEE, "
+ "null as PRIVILEGE, "
+ "null as IS_GRANTABLE limit 0;");
return getTablePrivileges.executeQuery();
}
public synchronized ResultSet getTables(String c, String s,
String t, String[] types) throws SQLException {
checkOpen();
t = (t == null || "".equals(t)) ? "%" : t.toUpperCase();
String sql = "select"
+ " null as TABLE_CAT,"
+ " null as TABLE_SCHEM,"
+ " upper(name) as TABLE_NAME,"
+ " upper(type) as TABLE_TYPE,"
+ " null as REMARKS,"
+ " null as TYPE_CAT,"
+ " null as TYPE_SCHEM,"
+ " null as TYPE_NAME,"
+ " null as SELF_REFERENCING_COL_NAME,"
+ " null as REF_GENERATION"
+ " from (select name, type from sqlite_master union all"
+ " select name, type from sqlite_temp_master)"
+ " where TABLE_NAME like '" + escape(t) + "'";
if (types != null) {
sql += " and TABLE_TYPE in (";
for (int i=0; i < types.length; i++) {
if (i > 0) sql += ", ";
sql += "'" + types[i].toUpperCase() + "'";
}
sql += ")";
}
sql += ";";
return conn.createStatement().executeQuery(sql);
}
public ResultSet getTableTypes() throws SQLException {
checkOpen();
if (getTableTypes == null) getTableTypes = conn.prepareStatement(
"select 'TABLE' as TABLE_TYPE"
+ " union select 'VIEW' as TABLE_TYPE;");
getTableTypes.clearParameters();
return getTableTypes.executeQuery();
}
public ResultSet getTypeInfo() throws SQLException {
if (getTypeInfo == null) {
getTypeInfo = conn.prepareStatement(
"select "
+ "tn as TYPE_NAME, "
+ "dt as DATA_TYPE, "
+ "0 as PRECISION, "
+ "null as LITERAL_PREFIX, "
+ "null as LITERAL_SUFFIX, "
+ "null as CREATE_PARAMS, "
+ typeNullable + " as NULLABLE, "
+ "1 as CASE_SENSITIVE, "
+ typeSearchable + " as SEARCHABLE, "
+ "0 as UNSIGNED_ATTRIBUTE, "
+ "0 as FIXED_PREC_SCALE, "
+ "0 as AUTO_INCREMENT, "
+ "null as LOCAL_TYPE_NAME, "
+ "0 as MINIMUM_SCALE, "
+ "0 as MAXIMUM_SCALE, "
+ "0 as SQL_DATA_TYPE, "
+ "0 as SQL_DATETIME_SUB, "
+ "10 as NUM_PREC_RADIX from ("
+ " select 'BLOB' as tn, " + Types.BLOB + " as dt union"
+ " select 'NULL' as tn, " + Types.NULL + " as dt union"
+ " select 'REAL' as tn, " + Types.REAL+ " as dt union"
+ " select 'TEXT' as tn, " + Types.VARCHAR + " as dt union"
+ " select 'INTEGER' as tn, "+ Types.INTEGER +" as dt"
+ ") order by TYPE_NAME;"
);
}
getTypeInfo.clearParameters();
return getTypeInfo.executeQuery();
}
public ResultSet getUDTs(String c, String s, String t, int[] types)
throws SQLException {
if (getUDTs == null) getUDTs = conn.prepareStatement("select "
+ "null as TYPE_CAT, "
+ "null as TYPE_SCHEM, "
+ "null as TYPE_NAME, "
+ "null as CLASS_NAME, "
+ "null as DATA_TYPE, "
+ "null as REMARKS, "
+ "null as BASE_TYPE "
+ "limit 0;");
getUDTs.clearParameters();
return getUDTs.executeQuery();
}
public ResultSet getVersionColumns(String c, String s, String t)
throws SQLException {
if (getVersionColumns == null)
getVersionColumns = conn.prepareStatement(
"select "
+ "null as SCOPE, "
+ "null as COLUMN_NAME, "
+ "null as DATA_TYPE, "
+ "null as TYPE_NAME, "
+ "null as COLUMN_SIZE, "
+ "null as BUFFER_LENGTH, "
+ "null as DECIMAL_DIGITS, "
+ "null as PSEUDO_COLUMN limit 0;");
return getVersionColumns.executeQuery();
}
ResultSet getGeneratedKeys() throws SQLException {
if (getGeneratedKeys == null) getGeneratedKeys = conn.prepareStatement(
"select last_insert_rowid();");
return getGeneratedKeys.executeQuery();
}
/** Replace all instances of ' with '' */
private String escape(final String val) {
// TODO: this function is ugly, pass this work off to SQLite, then we
// don't have to worry about Unicode 4, other characters needing
// escaping, etc.
int len = val.length();
StringBuffer buf = new StringBuffer(len);
for (int i=0; i < len; i++) {
if (val.charAt(i) == '\'') buf.append('\'');
buf.append(val.charAt(i));
}
return buf.toString();
}
public Struct createStruct(String t, Object[] attr) throws SQLException {
throw new SQLException("Not yet implemented by SQLite JDBC driver"); }
public ResultSet getFunctionColumns(String a, String b, String c,
String d) throws SQLException {
throw new SQLException("Not yet implemented by SQLite JDBC driver"); }
@Override
public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
// TODO Auto-generated method stub
return false;
}
@Override
public ResultSet getClientInfoProperties() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public ResultSet getFunctions(String catalog, String schemaPattern,
String functionNamePattern) throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public RowIdLifetime getRowIdLifetime() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public ResultSet getSchemas(String catalog, String schemaPattern)
throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isWrapperFor(Class<?> arg0) throws SQLException {
// TODO Auto-generated method stub
return false;
}
@Override
public <T> T unwrap(Class<T> arg0) throws SQLException {
// TODO Auto-generated method stub
return null;
}
}