er.extensions.jdbc
Class ERXSQLHelper.MySQLSQLHelper

java.lang.Object
  er.extensions.jdbc.ERXSQLHelper
      er.extensions.jdbc.ERXSQLHelper.MySQLSQLHelper

Enclosing class:

ERXSQLHelper

public static class ERXSQLHelper.MySQLSQLHelper
extends ERXSQLHelper

Nested Class Summary

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

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

Field Summary

Fields inherited from class er.extensions.jdbc.ERXSQLHelper

log

Constructor Summary

ERXSQLHelper.MySQLSQLHelper()

Method Summary

protected java.util.regex.Pattern	commentPattern() Returns a pattern than matches lines that start with "--".
java.lang.String	externalTypeForJDBCType(com.webobjects.jdbcadaptor.JDBCAdaptor adaptor, int jdbcType) We know better than EOF.
java.lang.String	limitExpressionForSQL(com.webobjects.eoaccess.EOSQLExpression expression, com.webobjects.eocontrol.EOFetchSpecification fetchSpecification, java.lang.String sql, long start, long end)
java.lang.String	sqlForCreateIndex(java.lang.String indexName, java.lang.String tableName, ERXSQLHelper.ColumnIndex... columnIndexes) Returns the SQL expression for creating an index on the given set of columns
java.lang.String	sqlForCreateUniqueIndex(java.lang.String indexName, java.lang.String tableName, ERXSQLHelper.ColumnIndex... columnIndexes) Returns the SQL expression for creating a unique index on the given set of columns
java.lang.String	sqlForRegularExpressionQuery(java.lang.String key, java.lang.String value) Returns the SQL expression for a regular expression query.
int	varcharLargeColumnWidth() Returns the width that should be used for a varcharLarge column in migrations.
int	varcharLargeJDBCType() Returns the JDBCType that should be used for a varcharLarge column in migrations.

Methods inherited from class er.extensions.jdbc.ERXSQLHelper

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ERXSQLHelper.MySQLSQLHelper

public ERXSQLHelper.MySQLSQLHelper()

Method Detail

commentPattern

protected java.util.regex.Pattern commentPattern()

Returns a pattern than matches lines that start with "--".

Overrides:

commentPattern in class ERXSQLHelper

Returns:

regex pattern that indicates this line is an SQL comment

externalTypeForJDBCType

public java.lang.String externalTypeForJDBCType(com.webobjects.jdbcadaptor.JDBCAdaptor adaptor,
                                                int jdbcType)

We know better than EOF. For any other case, we pass it up to the 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

limitExpressionForSQL

public java.lang.String limitExpressionForSQL(com.webobjects.eoaccess.EOSQLExpression expression,
                                              com.webobjects.eocontrol.EOFetchSpecification fetchSpecification,
                                              java.lang.String sql,
                                              long start,
                                              long end)

Overrides:

limitExpressionForSQL in class ERXSQLHelper

sqlForRegularExpressionQuery

public java.lang.String sqlForRegularExpressionQuery(java.lang.String key,
                                                     java.lang.String value)

Description copied from class: ERXSQLHelper

Returns the SQL expression for a regular expression query.

Overrides:

sqlForRegularExpressionQuery in class ERXSQLHelper

Returns:

the regex SQL

sqlForCreateUniqueIndex

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

Description copied from class: ERXSQLHelper

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

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

sqlForCreateIndex

public java.lang.String sqlForCreateIndex(java.lang.String indexName,
                                          java.lang.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

varcharLargeJDBCType

public int varcharLargeJDBCType()

Description copied from class: ERXSQLHelper

Returns the JDBCType that should be used for a varcharLarge column in migrations.

Overrides:

varcharLargeJDBCType in class ERXSQLHelper

Returns:

the JDBCType that should be used for a varcharLarge column in migrations

varcharLargeColumnWidth

public int varcharLargeColumnWidth()

Description copied from class: ERXSQLHelper

Returns the width that should be used for a varcharLarge column in migrations.

Overrides:

varcharLargeColumnWidth in class ERXSQLHelper

Returns:

the width that should be used for a varcharLarge column in migrations