org.apache.openjpa.jdbc.sql
Class DerbyDictionary

java.lang.Object
  org.apache.openjpa.jdbc.sql.DBDictionary
      org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary
          org.apache.openjpa.jdbc.sql.DerbyDictionary

All Implemented Interfaces:

JoinSyntaxes, Configurable, IdentifierConfiguration, ConnectionDecorator, LoggingConnectionDecorator.SQLWarningHandler

public class DerbyDictionary
extends AbstractDB2Dictionary

Dictionary for Apache Derby (formerly Cloudscape).

Nested Class Summary

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

DBDictionary.SerializedData

Field Summary

boolean

shutdownOnClose If true, we will shutdown the embedded database when closing the DataSource.

Fields inherited from class org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary

varcharCastLength

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

_proxyManager, allowsAliasInBulkClause, arrayTypeName, autoAssignClause, autoAssignTypeName, batchLimit, bigintTypeName, binaryTypeName, bitLengthFunction, bitTypeName, blobBufferSize, blobTypeName, booleanTypeName, castFunction, catalogSeparator, CENTI, characterColumnSize, charTypeName, clobBufferSize, clobTypeName, closePoolSQL, concatenateDelimiter, concatenateFunction, conf, connected, CONS_NAME_AFTER, CONS_NAME_BEFORE, CONS_NAME_MID, constraintNameMode, createPrimaryKeys, crossJoinClause, currentDateFunction, currentTimeFunction, currentTimestampFunction, databaseProductName, databaseProductVersion, datePrecision, dateTypeName, DECI, decimalTypeName, defaultSchemaName, delimitedCase, distinctCountColumnSeparator, distinctTypeName, doubleTypeName, driverVendor, dropTableSQL, fixedSizeTypeNames, fixedSizeTypeNameSet, floatTypeName, forUpdateClause, getStringVal, inClauseLimit, initializationSQL, innerJoinClause, integerTypeName, invalidColumnWordSet, isJDBC3, isJDBC4, javaObjectTypeName, joinSyntax, lastGeneratedKeyQuery, leadingDelimiter, log, longVarbinaryTypeName, longVarcharTypeName, maxAutoAssignNameLength, maxColumnNameLength, maxConstraintNameLength, maxEmbeddedBlobSize, maxEmbeddedClobSize, maxIndexesPerTable, maxIndexNameLength, maxTableNameLength, MICRO, MILLI, NAME_ANY, NAME_SEQUENCE, NAME_TABLE, nameConcatenator, NANO, nativeSequenceType, nextSequenceQuery, NO_BATCH, nullTypeName, numericTypeName, otherTypeName, outerJoinClause, platform, RANGE_POST_DISTINCT, RANGE_POST_LOCK, RANGE_POST_SELECT, RANGE_PRE_DISTINCT, rangePosition, realTypeName, refTypeName, reportsSuccessNoInfoOnBatchUpdates, requiresAliasForSubselect, requiresAutoCommitForMetaData, requiresCastForComparisons, requiresCastForMathFunctions, requiresConditionForCrossJoin, requiresSearchStringEscapeForLike, requiresTargetForDelete, reservedWords, reservedWordSet, roundTimeToMillisec, SCHEMA_CASE_LOWER, SCHEMA_CASE_PRESERVE, SCHEMA_CASE_UPPER, schemaCase, searchStringEscape, SEC, selectWords, selectWordSet, sequenceNameSQL, sequenceSchemaSQL, sequenceSQL, setStringRightTruncationOn, simulateLocking, smallintTypeName, sqlStateCodes, storageLimitationsFatal, storeCharsAsNumbers, storeLargeNumbersAsStrings, stringLengthFunction, structTypeName, substringFunctionName, supportsAlterTableWithAddColumn, supportsAlterTableWithDropColumn, supportsAutoAssign, supportsCascadeDeleteAction, supportsCascadeUpdateAction, supportsCaseConversionForLob, supportsComments, supportsCorrelatedSubselect, supportsDefaultDeleteAction, supportsDefaultUpdateAction, supportsDeferredConstraints, supportsDelimitedIdentifiers, supportsForeignKeys, supportsForeignKeysComposite, supportsGeneralCaseExpression, supportsGetGeneratedKeys, supportsHaving, supportsLockingWithDistinctClause, supportsLockingWithInnerJoin, supportsLockingWithMultipleTables, supportsLockingWithOrderClause, supportsLockingWithOuterJoin, supportsLockingWithSelectRange, supportsModOperator, supportsMultipleNontransactionalResultSets, supportsNullDeleteAction, supportsNullTableForGetColumns, supportsNullTableForGetImportedKeys, supportsNullTableForGetIndexInfo, supportsNullTableForGetPrimaryKeys, supportsNullUniqueColumn, supportsNullUpdateAction, supportsParameterInSelect, supportsQueryTimeout, supportsRestrictDeleteAction, supportsRestrictUpdateAction, supportsSchemaForGetColumns, supportsSchemaForGetTables, supportsSelectEndIndex, supportsSelectForUpdate, supportsSelectFromFinalTable, supportsSelectStartIndex, supportsSimpleCaseExpression, supportsSubselect, supportsUniqueConstraints, supportsXMLColumn, systemSchemas, systemSchemaSet, systemTables, systemTableSet, tableForUpdateClause, tableLengthIncludesSchema, tableTypes, timestampTypeName, timeTypeName, tinyintTypeName, toLowerCaseFunction, toUpperCaseFunction, trailingDelimiter, trimBothFunction, trimLeadingFunction, trimSchemaName, trimStringColumns, trimTrailingFunction, typeModifierSet, UNLIMITED, useGetBestRowIdentifierForPrimaryKeys, useGetBytesForBlobs, useGetObjectForBlobs, useGetStringForClobs, useJDBC4SetBinaryStream, useNativeSequenceCache, useSchemaName, useSetBytesForBlobs, useSetStringForClobs, useWildCardForCount, validationSQL, varbinaryTypeName, varcharTypeName, VENDOR_DATADIRECT, VENDOR_OTHER, xmlTypeEncoding, xmlTypeName

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

SYNTAX_DATABASE, SYNTAX_SQL92, SYNTAX_TRADITIONAL

Constructor Summary

DerbyDictionary()

Method Summary

protected void	appendSelectRange(SQLBuffer buf, long start, long end, boolean subselect) Appends a range to the given buffer.
int	applyRange(Select select, int count) Applies range calculation on the actual number of rows selected by a COUNT(*) query.
void	closeDataSource(DataSource dataSource) Closes the specified DataSource and releases any resources associated with it.
void	connectedConfiguration(Connection conn) This method is called when the dictionary first sees any connection.
boolean	isFatalException(int subtype, SQLException ex) Determine if the given SQL Exception is fatal or recoverable (such as a timeout).

Methods inherited from class org.apache.openjpa.jdbc.sql.AbstractDB2Dictionary

indexOf, substring

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

addCastAsType, addErrorCode, appendCast, appendLength, appendNumericCast, appendSelect, appendSize, appendUpdates, appendXmlComparison, assertSupport, calculateValue, canOuterJoin, combineForeignKey, comment, comparison, configureNamingRules, convertSchemaCase, convertSchemaCase, copy, copy, createIndexIfNecessary, createIndexIfNecessary, decorate, deleteStream, delimitAll, endConfiguration, executeQuery, fromDBName, getAddColumnSQL, getAddForeignKeySQL, getAddPrimaryKeySQL, getAlterSequenceSQL, getArray, getAsciiStream, getBatchFetchSize, getBatchLimit, getBatchUpdateCount, getBigDecimal, getBigInteger, getBinaryStream, getBlob, getBlobObject, getBoolean, getByte, getBytes, getCalendar, getCastFunction, getCastFunction, getCatalogNameForMetadata, getCatalogNameForMetadata, getChar, getCharacterStream, getClob, getClobString, getColumnDBName, getColumnIdentifier, getColumnNameForMetadata, getColumnNameForMetadata, getColumns, getColumns, getConversionKey, getCreateIndexSQL, getCreateSequenceSQL, getCreateTableSQL, getCreateTableSQL, getDate, getDate, getDeclareColumnSQL, getDefaultIdentifierRule, getDefaultSchemaName, getDeleteTableContentsSQL, getDeleteTargets, getDelimitedCase, getDelimitIdentifiers, getDouble, getDropColumnSQL, getDropForeignKeySQL, getDropIndexSQL, getDropPrimaryKeySQL, getDropSequenceSQL, getDropTableSQL, getFloat, getForeignKeyConstraintSQL, getForUpdateClause, getFrom, getFromSelect, getFullIdentifier, getFullName, getFullName, getFullName, getGeneratedKey, getGeneratedKeySequenceName, getGenKeySeqName, getIdentifierConcatenator, getIdentifierDelimiter, getIdentifierRule, getIdentifierRules, getIdentityColumnName, getImportedKeys, getImportedKeys, getImportedKeys, getImportedKeys, getIndexInfo, getIndexInfo, getInt, getInvalidColumnWordSet, getIsNotNullSQL, getIsNullSQL, getJDBCType, getJDBCType, getJDBCType, getKey, getLeadingDelimiter, getLOBStream, getLocale, getLog, getLong, getMajorVersion, getMarkerForInsertUpdate, getMinorVersion, getNamingUtil, getNumber, getObject, getPlaceholderValueString, getPreferredType, getPrimaryKeyConstraintSQL, getPrimaryKeys, getPrimaryKeys, getPrimaryKeysFromBestRowIdentifier, getPrimaryKeysFromBestRowIdentifier, getPrimaryKeysFromGetPrimaryKeys, getPrimaryKeysFromGetPrimaryKeys, getRef, getSchemaCase, getSchemaNameForMetadata, getSchemaNameForMetadata, getSelectOperation, getSelects, getSelectTableAliases, getSequence, getSequences, getSequences, getSequencesSQL, getSequencesSQL, getShort, getString, getSupportsDelimitedIdentifiers, getSupportsXMLColumn, getTableNameForMetadata, getTableNameForMetadata, getTables, getTables, getTime, getTimestamp, getTrailingDelimiter, getTrimSchemaName, getTypeName, getTypeName, getUniqueConstraintSQL, getValidColumnName, getValidColumnName, getValidColumnName, getValidColumnName, getValidForeignKeyName, getValidForeignKeyName, getValidIndexName, getValidIndexName, getValidPrimaryKeyName, getValidSequenceName, getValidSequenceName, getValidTableName, getValidTableName, getValidUniqueName, getValidUniqueName, getVersionColumn, getVersionColumn, getWhere, getXMLTypeEncoding, handleWarning, insertBlobForStreamingLoad, insertClobForStreamingLoad, insertSize, isImplicitJoin, isSelect, isSystemIndex, isSystemIndex, isSystemSequence, isSystemSequence, isSystemSequence, isSystemTable, isSystemTable, isUsingLimit, isUsingOffset, isUsingOrderBy, isUsingRange, makeNameValid, makeNameValid, makeNameValid, makeNameValid, matchErrorState, mathFunction, needsToCreateIndex, needsToCreateIndex, newColumn, newForeignKey, newIndex, newPrimaryKey, newSequence, newStoreException, newTable, prepareStatement, putBytes, putChars, putString, refSchemaComponents, serialize, setArray, setAsciiStream, setBatchLimit, setBigDecimal, setBigInteger, setBinaryStream, setBlob, setBlobObject, setBoolean, setByte, setBytes, setCalendar, setChar, setCharacterStream, setClob, setClobString, setConfiguration, setDate, setDate, setDefaultSchemaName, setDelimitedCase, setDelimitIdentifiers, setDouble, setFloat, setInt, setJoinSyntax, setLeadingDelimiter, setLocale, setLong, setMajorVersion, setMinorVersion, setNull, setNumber, setObject, setQueryTimeout, setRef, setShort, setStatementQueryTimeout, setString, setSupportsDelimitedIdentifiers, setSupportsXMLColumn, setTime, setTimeouts, setTimeouts, setTimestamp, setTrailingDelimiter, setTrimSchemaName, setTyped, setUnknown, setUnknown, setXMLTypeEncoding, shorten, startConfiguration, storageWarning, supportsDeferredForeignKeyConstraints, supportsDeferredUniqueConstraints, supportsDeleteAction, supportsIsolationForUpdate, supportsLocking, supportsRandomAccessResultSet, supportsUpdateAction, toBulkOperation, toDBName, toDBName, toDelete, toNativeJoin, toOperation, toOperation, toSelect, toSelect, toSelect, toSelect, toSelect, toSelectCount, toSQL92Join, toTraditionalJoin, toUpdate, updateBlob, updateClob, validateBatchProcess, validateDBSpecificBatchProcess, versionEqualOrEarlierThan, versionEqualOrLaterThan, versionLaterThan

Methods inherited from class java.lang.Object

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

Field Detail

shutdownOnClose

public boolean shutdownOnClose

If true, we will shutdown the embedded database when closing the DataSource.

Constructor Detail

DerbyDictionary

public DerbyDictionary()

Method Detail

connectedConfiguration

public void connectedConfiguration(Connection conn)
                            throws SQLException

Description copied from class: DBDictionary

This method is called when the dictionary first sees any connection. It is used to initialize dictionary metadata if needed. If you override this method, be sure to call super.connectedConfiguration.

Overrides:

connectedConfiguration in class DBDictionary

Throws:

SQLException

appendSelectRange

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

Appends a range to the given buffer.
A range query is never appended to a subselct clause.
If this dictionary supports offset and limit on queries then the syntax is

 [ OFFSET {start} ROWS ]
 [ FETCH NEXT {end-start} ROWS ONLY ]
 

Otherwise, the offset is not used and the syntax is

 [ FETCH FIRST {end} ROWS ONLY ]
 

Overrides:

appendSelectRange in class DBDictionary

Parameters:

buf - the SQL buffer to be appended

start - starting offset. 0 means offset is not used.

end - number of rows to be fetched. Long.MAX_VALUE means no limit.

subselect - flags if the buffer represents a SQL Subquery clause

closeDataSource

public void closeDataSource(DataSource dataSource)

Description copied from class: DBDictionary

Closes the specified DataSource and releases any resources associated with it.

Overrides:

closeDataSource in class DBDictionary

Parameters:

dataSource - the DataSource to close

isFatalException

public boolean isFatalException(int subtype,
                                SQLException ex)

Description copied from class: DBDictionary

Determine if the given SQL Exception is fatal or recoverable (such as a timeout). This implementation always returns true (i.e. all exceptions are fatal). The current dictionary implementation can overwrite this method to mark certain exception conditions as recoverable error.

Overrides:

isFatalException in class DBDictionary

Parameters:

subtype - A constant indicating the category of error as defined in StoreException.

ex - original SQL Exception as raised by the database driver.

Returns:

false if the error is fatal.

applyRange

public int applyRange(Select select,
                      int count)

Applies range calculation on the actual number of rows selected by a COUNT(*) query. A range query may use either only the limit or both offset and limit based on database dictionary support and accordingly the number of rows in the result set needs to be modified.

Overrides:

applyRange in class DBDictionary

Parameters:

select -

count -

Returns: