org.apache.openjpa.jdbc.sql
Class MySQLDictionary

java.lang.Object
  org.apache.openjpa.jdbc.sql.DBDictionary
      org.apache.openjpa.jdbc.sql.MySQLDictionary

All Implemented Interfaces:

JoinSyntaxes, Configurable, ConnectionDecorator, LoggingConnectionDecorator.SQLWarningHandler

public class MySQLDictionary
extends DBDictionary

Dictionary for MySQL.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

DBDictionary.SerializedData

Field Summary

boolean	driverDeserializesBlobs Whether the driver automatically deserializes blobs.
boolean	optimizeMultiTableDeletes Whether to inline multi-table bulk-delete operations into MySQL's combined DELETE FROM foo, bar, baz syntax.
String	tableType The MySQL table type to use when creating tables; defaults to innodb.
boolean	useClobs Whether to use clobs.

Fields inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

allowsAliasInBulkClause, arrayTypeName, autoAssignClause, autoAssignTypeName, bigintTypeName, binaryTypeName, bitLengthFunction, bitTypeName, blobTypeName, booleanTypeName, castFunction, catalogSeparator, CENTI, characterColumnSize, charTypeName, clobTypeName, closePoolSQL, concatenateDelimiter, concatenateFunction, conf, connected, CONS_NAME_AFTER, CONS_NAME_BEFORE, CONS_NAME_MID, constraintNameMode, createPrimaryKeys, crossJoinClause, currentDateFunction, currentTimeFunction, currentTimestampFunction, datePrecision, dateTypeName, DECI, decimalTypeName, distinctCountColumnSeparator, distinctTypeName, doubleTypeName, driverVendor, dropTableSQL, fixedSizeTypeNames, fixedSizeTypeNameSet, floatTypeName, forUpdateClause, getStringVal, inClauseLimit, initializationSQL, innerJoinClause, integerTypeName, javaObjectTypeName, joinSyntax, lastGeneratedKeyQuery, log, longVarbinaryTypeName, longVarcharTypeName, maxAutoAssignNameLength, maxColumnNameLength, maxConstraintNameLength, maxEmbeddedBlobSize, maxEmbeddedClobSize, maxIndexesPerTable, maxIndexNameLength, maxTableNameLength, MICRO, MILLI, NAME_ANY, NAME_SEQUENCE, NAME_TABLE, NANO, nextSequenceQuery, nullTypeName, numericTypeName, otherTypeName, outerJoinClause, platform, RANGE_POST_DISTINCT, RANGE_POST_LOCK, RANGE_POST_SELECT, RANGE_PRE_DISTINCT, rangePosition, realTypeName, refTypeName, requiresAliasForSubselect, requiresAutoCommitForMetaData, requiresCastForComparisons, requiresCastForMathFunctions, requiresConditionForCrossJoin, reservedWords, reservedWordSet, SCHEMA_CASE_LOWER, SCHEMA_CASE_PRESERVE, SCHEMA_CASE_UPPER, schemaCase, searchStringEscape, SEC, sequenceNameSQL, sequenceSchemaSQL, sequenceSQL, simulateLocking, smallintTypeName, storageLimitationsFatal, storeCharsAsNumbers, storeLargeNumbersAsStrings, stringLengthFunction, structTypeName, substringFunctionName, supportsAlterTableWithAddColumn, supportsAlterTableWithDropColumn, supportsAutoAssign, supportsCascadeDeleteAction, supportsCascadeUpdateAction, supportsCorrelatedSubselect, supportsDefaultDeleteAction, supportsDefaultUpdateAction, supportsDeferredConstraints, supportsForeignKeys, supportsHaving, supportsLockingWithDistinctClause, supportsLockingWithInnerJoin, supportsLockingWithMultipleTables, supportsLockingWithOrderClause, supportsLockingWithOuterJoin, supportsLockingWithSelectRange, supportsModOperator, supportsMultipleNontransactionalResultSets, supportsNullDeleteAction, supportsNullTableForGetColumns, supportsNullTableForGetImportedKeys, supportsNullTableForGetIndexInfo, supportsNullTableForGetPrimaryKeys, supportsNullUpdateAction, supportsQueryTimeout, supportsRestrictDeleteAction, supportsRestrictUpdateAction, supportsSchemaForGetColumns, supportsSchemaForGetTables, supportsSelectEndIndex, supportsSelectForUpdate, supportsSelectStartIndex, supportsSubselect, supportsTimestampNanos, supportsUniqueConstraints, supportsXMLColumn, systemSchemas, systemSchemaSet, systemTables, systemTableSet, tableForUpdateClause, tableTypes, timestampTypeName, timeTypeName, tinyintTypeName, toLowerCaseFunction, toUpperCaseFunction, trimBothFunction, trimLeadingFunction, trimTrailingFunction, useGetBestRowIdentifierForPrimaryKeys, useGetBytesForBlobs, useGetObjectForBlobs, useGetStringForClobs, useSchemaName, useSetBytesForBlobs, useSetStringForClobs, validationSQL, varbinaryTypeName, varcharTypeName, VENDOR_DATADIRECT, VENDOR_OTHER, xmlTypeName

Fields inherited from interface org.apache.openjpa.jdbc.sql.JoinSyntaxes

SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL

Constructor Summary

MySQLDictionary()

Method Summary

protected void	appendSelectRange(SQLBuffer buf, long start, long end) If this dictionary can select ranges, use this method to append the range SQL.
String[]	getAddPrimaryKeySQL(PrimaryKey pk) Return a series of SQL statements to add the given primary key to its table.
Object	getBlobObject(ResultSet rs, int column, JDBCStore store) Convert the specified column of the SQL ResultSet to the proper java type.
String[]	getCreateTableSQL(Table table) Return a series of SQL statements to create the given table, complete with columns.
String[]	getDeleteTableContentsSQL(Table[] tables) Create SQL to delete the contents of the specified tables.
String[]	getDropIndexSQL(Index index) Return a series of SQL statements to drop the given index.
protected String	getForeignKeyConstraintSQL(ForeignKey fk) Return the declaration SQL for the given foreign key, or null if it is not supported.
int	getPreferredType(int type) Return the preferred Types type for the given one.
protected Column	newColumn(ResultSet colMeta) Create a new column from the information in the schema metadata.

Methods inherited from class org.apache.openjpa.jdbc.sql.DBDictionary

addCastAsType, appendCast, appendLength, appendNumericCast, appendSize, appendUpdates, appendXmlComparison, assertSupport, canOuterJoin, closeDataSource, comparison, connectedConfiguration, convertSchemaCase, decorate, endConfiguration, getAddColumnSQL, getAddForeignKeySQL, getArray, getAsciiStream, getBigDecimal, getBigInteger, getBinaryStream, getBlob, getBoolean, getByte, getBytes, getCalendar, getCastFunction, getCatalogNameForMetadata, getChar, getCharacterStream, getClob, getClobString, getColumnNameForMetadata, getColumns, getCreateIndexSQL, getCreateSequenceSQL, getDate, getDate, getDeclareColumnSQL, getDouble, getDropColumnSQL, getDropForeignKeySQL, getDropPrimaryKeySQL, getDropSequenceSQL, getDropTableSQL, getFloat, getForUpdateClause, getFrom, getFromSelect, getFullName, getFullName, getFullName, getGeneratedKey, getGeneratedKeySequenceName, getImportedKeys, getIndexInfo, getInt, getJDBCType, getLocale, getLong, getNumber, getObject, getPlaceholderValueString, getPrimaryKeyConstraintSQL, getPrimaryKeys, getPrimaryKeysFromBestRowIdentifier, getPrimaryKeysFromGetPrimaryKeys, getRef, getSchemaNameForMetadata, getSelectOperation, getSelects, getSequences, getSequencesSQL, getShort, getString, getTableNameForMetadata, getTables, getTime, getTimestamp, getTypeName, getTypeName, getUniqueConstraintSQL, getValidColumnName, getValidForeignKeyName, getValidIndexName, getValidPrimaryKeyName, getValidSequenceName, getValidTableName, getValidUniqueName, getVersionColumn, getWhere, handleWarning, indexOf, isSystemIndex, isSystemSequence, isSystemTable, makeNameValid, mathFunction, newForeignKey, newIndex, newPrimaryKey, newSequence, newStoreException, newTable, putBytes, putChars, putString, refSchemaComponents, serialize, setArray, setAsciiStream, setBigDecimal, setBigInteger, setBinaryStream, setBlob, setBlobObject, setBoolean, setByte, setBytes, setCalendar, setChar, setCharacterStream, setClob, setClobString, setConfiguration, setDate, setDate, setDouble, setFloat, setInt, setJoinSyntax, setLocale, setLong, setNull, setNumber, setObject, setRef, setShort, setString, setTime, setTimestamp, setTyped, setUnknown, shorten, startConfiguration, storageWarning, substring, supportsDeleteAction, supportsLocking, supportsRandomAccessResultSet, supportsUpdateAction, toBulkOperation, toDelete, toNativeJoin, toOperation, toSelect, toSelect, toSelectCount, toSQL92Join, toTraditionalJoin, toUpdate

Methods inherited from class java.lang.Object

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

Field Detail

tableType

public String tableType

The MySQL table type to use when creating tables; defaults to innodb.

useClobs

public boolean useClobs

Whether to use clobs. Some older versions of MySQL do not handle clobs properly so we default to false here.

driverDeserializesBlobs

public boolean driverDeserializesBlobs

Whether the driver automatically deserializes blobs.

optimizeMultiTableDeletes

public boolean optimizeMultiTableDeletes

Whether to inline multi-table bulk-delete operations into MySQL's combined DELETE FROM foo, bar, baz syntax. Defaults to false, since this may fail in the presence of InnoDB tables with foreign keys.

See Also:

http://dev.mysql.com/doc/refman/5.0/en/delete.html

Constructor Detail

MySQLDictionary

public MySQLDictionary()

Method Detail

getCreateTableSQL

public String[] getCreateTableSQL(Table table)

Description copied from class: DBDictionary

Return a series of SQL statements to create the given table, complete with columns. Indexes and constraints will be created separately.

Overrides:

getCreateTableSQL in class DBDictionary

getDropIndexSQL

public String[] getDropIndexSQL(Index index)

Description copied from class: DBDictionary

Return a series of SQL statements to drop the given index. Returns DROP INDEX <index name> by default.

Overrides:

getDropIndexSQL in class DBDictionary

getAddPrimaryKeySQL

public String[] getAddPrimaryKeySQL(PrimaryKey pk)

Description copied from class: DBDictionary

Return a series of SQL statements to add the given primary key to its table. Return an empty array if operation not supported. Returns ALTER TABLE <table name> ADD <pk cons sql > by default.

Overrides:

getAddPrimaryKeySQL in class DBDictionary

getForeignKeyConstraintSQL

protected String getForeignKeyConstraintSQL(ForeignKey fk)

Description copied from class: DBDictionary

Return the declaration SQL for the given foreign key, or null if it is not supported. This method is used from within DBDictionary.getCreateTableSQL(org.apache.openjpa.jdbc.schema.Table) and DBDictionary.getAddForeignKeySQL(org.apache.openjpa.jdbc.schema.ForeignKey). Returns CONSTRAINT <cons name> FOREIGN KEY (<col list>) REFERENCES <foreign table> (<col list>) [ON DELETE <action>] [ON UPDATE <action>] by default.

Overrides:

getForeignKeyConstraintSQL in class DBDictionary

getDeleteTableContentsSQL

public String[] getDeleteTableContentsSQL(Table[] tables)

Description copied from class: DBDictionary

Create SQL to delete the contents of the specified tables. The default implementation drops all non-deferred RESTRICT foreign key constraints involving the specified tables, issues DELETE statements against the tables, and then adds the dropped constraints back in. Databases with more optimal ways of deleting the contents of several tables should override this method.

Overrides:

getDeleteTableContentsSQL in class DBDictionary

appendSelectRange

protected void appendSelectRange(SQLBuffer buf,
                                 long start,
                                 long end)

Description copied from class: DBDictionary

If this dictionary can select ranges, use this method to append the range SQL.

Overrides:

appendSelectRange in class DBDictionary

newColumn

protected Column newColumn(ResultSet colMeta)
                    throws SQLException

Description copied from class: DBDictionary

Create a new column from the information in the schema metadata.

Overrides:

newColumn in class DBDictionary

Throws:

SQLException

getBlobObject

public Object getBlobObject(ResultSet rs,
                            int column,
                            JDBCStore store)
                     throws SQLException

Description copied from class: DBDictionary

Convert the specified column of the SQL ResultSet to the proper java type.

Overrides:

getBlobObject in class DBDictionary

Throws:

SQLException

getPreferredType

public int getPreferredType(int type)

Description copied from class: DBDictionary

Return the preferred Types type for the given one. Returns the given type by default.

Overrides:

getPreferredType in class DBDictionary