er.extensions.jdbc

Class ERXSQLHelper.FirebirdSQLHelper

java.lang.Object

er.extensions.jdbc.ERXSQLHelper

er.extensions.jdbc.ERXSQLHelper.FirebirdSQLHelper

Enclosing class:

ERXSQLHelper

public static class ERXSQLHelper.FirebirdSQLHelper
extends ERXSQLHelper

Nested Class Summary

Nested classes/interfaces inherited from class er.extensions.jdbc.ERXSQLHelper

ERXSQLHelper.ColumnIndex, ERXSQLHelper.CustomTypes, ERXSQLHelper.DB2SQLHelper, ERXSQLHelper.DerbySQLHelper, ERXSQLHelper.EROracleSQLHelper, ERXSQLHelper.FirebirdSQLHelper, ERXSQLHelper.FrontBaseSQLHelper, ERXSQLHelper.H2SQLHelper, ERXSQLHelper.MicrosoftSQLHelper, ERXSQLHelper.MySQLSQLHelper, ERXSQLHelper.NoSQLHelper, ERXSQLHelper.OpenBaseSQLHelper, ERXSQLHelper.OracleSQLHelper, ERXSQLHelper.PostgresqlSQLHelper

Constructor Summary

Constructors

Constructor and Description
FirebirdSQLHelper()

Method Summary

Modifier and Type	Method and Description
String	externalTypeForJDBCType(JDBCAdaptor adaptor, int jdbcType) JDBCAdaptor.externalTypeForJDBCType just returns the first type it finds instead of trying to find a best match.
String	limitExpressionForSQL(EOSQLExpression expression, EOFetchSpecification fetchSpecification, String sql, long start, long end)
protected int	maximumElementPerInClause(EOEntity entity) The database specific limit, or or most efficient number, of elements in an IN clause in a statement.
String	quoteColumnName(String columnName)
String	sqlForCreateIndex(String indexName, String tableName, ERXSQLHelper.ColumnIndex... columnIndexes) Returns the SQL expression for creating an index on the given set of columns
String	sqlForCreateUniqueIndex(String indexName, String tableName, ERXSQLHelper.ColumnIndex... columnIndexes) Creates unique index; stolen from the derby helper
protected String	sqlForGetNextValFromSequencedNamed(String sequenceName) Returns the SQL required to select the next value from the given sequence.

Methods inherited from class er.extensions.jdbc.ERXSQLHelper

_groupByOrHavingIndex, _orderByIndex, addGroupByClauseToExpression, addGroupByClauseToExpression, addHavingCountClauseToExpression, appendItemToListString, attributesToFetchForEntity, canReliablyPerformDistinctWithSortOrderings, columnIndexesFromColumnNames, columnNamesFromColumnIndexes, commandSeparatorChar, commandSeparatorString, commentPattern, createDependentSchemaSQLForEntities, createIndexSQLForEntities, createIndexSQLForEntities, createSchemaSQLForEntitiesInDatabaseContext, createSchemaSQLForEntitiesInModel, createSchemaSQLForEntitiesInModelAndOptions, createSchemaSQLForEntitiesInModelWithName, createSchemaSQLForEntitiesInModelWithNameAndOptions, createSchemaSQLForEntitiesWithOptions, createSchemaSQLForEntitiesWithOptions, customQueryExpressionHintAsString, defaultOptionDictionary, formatValueForAttribute, getNextValFromSequenceNamed, handleDatabaseException, jdbcTypeForCustomType, migrationTableName, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, newSQLHelper, prepareConnectionForSchemaChange, readFormatForAggregateFunction, readFormatForAggregateFunction, reassignExternalTypeForValueTypeOverride, removeSelectFromExpression, restoreConnectionSettingsAfterSchemaChange, rowCountForFetchSpecification, shouldExecute, shouldPerformDistinctInMemory, splitSQLStatements, splitSQLStatementsFromFile, splitSQLStatementsFromInputStream, sqlExpressionForFetchSpecification, sqlExpressionForFetchSpecification, sqlForCountDistinct, sqlForCreateIndex, sqlForCreateUniqueIndex, sqlForFullTextQuery, sqlForRegularExpressionQuery, sqlForSubquery, sqlWhereClauseStringForKey, varcharLargeColumnWidth, varcharLargeJDBCType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FirebirdSQLHelper

public FirebirdSQLHelper()

Method Detail

externalTypeForJDBCType

public String externalTypeForJDBCType(JDBCAdaptor adaptor,
                                      int jdbcType)

Description copied from class: ERXSQLHelper

JDBCAdaptor.externalTypeForJDBCType just returns the first type it finds instead of trying to find a best match. This can still fail, mind you, but it should be much better than the EOF default impl.

Overrides:

externalTypeForJDBCType in class ERXSQLHelper

Parameters:

adaptor - the adaptor to retrieve an external type for

jdbcType - the JDBC type number

Returns:

a guess at the external type name to use

sqlForGetNextValFromSequencedNamed

protected String sqlForGetNextValFromSequencedNamed(String sequenceName)

Description copied from class: ERXSQLHelper

Returns the SQL required to select the next value from the given sequence. This should return a single row with a single column.

Overrides:

sqlForGetNextValFromSequencedNamed in class ERXSQLHelper

Parameters:

sequenceName - the name of the sequence

Returns:

the next sequence value

maximumElementPerInClause

protected int maximumElementPerInClause(EOEntity entity)

Description copied from class: ERXSQLHelper

The database specific limit, or or most efficient number, of elements in an IN clause in a statement. If there are more that this number of elements, additional IN clauses will be generated, ORed to the others.

Overrides:

maximumElementPerInClause in class ERXSQLHelper

Parameters:

entity - EOEntity that can be used to fine-tune the result

Returns:

database specific limit, or or most efficient number, of elements in an IN clause in a statement

limitExpressionForSQL

public String limitExpressionForSQL(EOSQLExpression expression,
                                    EOFetchSpecification fetchSpecification,
                                    String sql,
                                    long start,
                                    long end)

Overrides:

limitExpressionForSQL in class ERXSQLHelper

quoteColumnName

public String quoteColumnName(String columnName)

Overrides:

quoteColumnName in class ERXSQLHelper

sqlForCreateUniqueIndex

public String sqlForCreateUniqueIndex(String indexName,
                                      String tableName,
                                      ERXSQLHelper.ColumnIndex... columnIndexes)

Creates unique index; stolen from the derby helper

Overrides:

sqlForCreateUniqueIndex in class ERXSQLHelper

Parameters:

indexName - the name of the index to create

tableName - the name of the containing table

columnIndexes - the list of columns to index on

Returns:

a SQL expression

See Also:

ERXSQLHelper.sqlForCreateUniqueIndex(String, String, ColumnIndex...)

sqlForCreateIndex

public String sqlForCreateIndex(String indexName,
                                String tableName,
                                ERXSQLHelper.ColumnIndex... columnIndexes)

Description copied from class: ERXSQLHelper

Returns the SQL expression for creating an index on the given set of columns

Overrides:

sqlForCreateIndex in class ERXSQLHelper

Parameters:

indexName - the name of the index to create

tableName - the name of the containing table

columnIndexes - the list of columns to index on

Returns:

a SQL expression