org.apache.openjpa.jdbc.sql
Class EmpressDictionary

java.lang.Object
  extended by org.apache.openjpa.jdbc.sql.DBDictionary
      extended by org.apache.openjpa.jdbc.sql.EmpressDictionary
All Implemented Interfaces:
JoinSyntaxes, Configurable, ConnectionDecorator, LoggingConnectionDecorator.SQLWarningHandler

public class EmpressDictionary
extends DBDictionary

Dictionary for Empress using ODBC server combined with their type 2 driver. This dictionary may issues with other driver/topology configurations. Empress does not allow multiple connections to read rows read in a transaction, effectively forcing pessimistic transactions regardless of the Optimistic setting. To allow users to use optimistic transactions in a multi-connection evironment, you must set the AllowConcurrentRead setting to true in addition to standard options. Empress has the following additional limitations:


Nested Class Summary
 
Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.sql.DBDictionary
DBDictionary.SerializedData
 
Field Summary
 boolean allowConcurrentRead
          This setting inserts "BYPASS" after every "SELECT".
 
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, selectWords, selectWordSet, 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
EmpressDictionary()
           
 
Method Summary
 String[] getDropColumnSQL(Column column)
          Return a series of SQL statements to drop the given column from its table.
 boolean isSystemIndex(String name, Table table)
          This method is used to filter system indexes from database metadata.
 void setDouble(PreparedStatement stmnt, int idx, double val, Column col)
          Set the given value as a parameter to the statement.
 void setFloat(PreparedStatement stmnt, int idx, float val, Column col)
          Set the given value as a parameter to the statement.
 SQLBuffer toSelect(SQLBuffer selects, JDBCFetchConfiguration fetch, SQLBuffer from, SQLBuffer where, SQLBuffer group, SQLBuffer having, SQLBuffer order, boolean distinct, boolean forUpdate, long startIdx, long endIdx)
          Combine the given components into a SELECT statement.
 
Methods inherited from class org.apache.openjpa.jdbc.sql.DBDictionary
addCastAsType, appendCast, appendLength, appendNumericCast, appendSelectRange, appendSize, appendUpdates, appendXmlComparison, assertSupport, canOuterJoin, closeDataSource, comparison, connectedConfiguration, convertSchemaCase, createIndexIfNecessary, decorate, endConfiguration, getAddColumnSQL, getAddForeignKeySQL, getAddPrimaryKeySQL, getArray, getAsciiStream, getBigDecimal, getBigInteger, getBinaryStream, getBlob, getBlobObject, getBoolean, getByte, getBytes, getCalendar, getCastFunction, getCatalogNameForMetadata, getChar, getCharacterStream, getClob, getClobString, getColumnNameForMetadata, getColumns, getCreateIndexSQL, getCreateSequenceSQL, getCreateTableSQL, getDate, getDate, getDeclareColumnSQL, getDeleteTableContentsSQL, getDouble, getDropForeignKeySQL, getDropIndexSQL, getDropPrimaryKeySQL, getDropSequenceSQL, getDropTableSQL, getFloat, getForeignKeyConstraintSQL, getForUpdateClause, getFrom, getFromSelect, getFullName, getFullName, getFullName, getGeneratedKey, getGeneratedKeySequenceName, getImportedKeys, getIndexInfo, getInt, getJDBCType, getLocale, getLong, getNumber, getObject, getPlaceholderValueString, getPreferredType, getPrimaryKeyConstraintSQL, getPrimaryKeys, getPrimaryKeysFromBestRowIdentifier, getPrimaryKeysFromGetPrimaryKeys, getRef, getSchemaCase, 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, isSelect, isSystemSequence, isSystemTable, makeNameValid, mathFunction, newColumn, 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, setInt, setJoinSyntax, setLocale, setLong, setNull, setNumber, setObject, setRef, setShort, setString, setTime, setTimestamp, setTyped, setUnknown, shorten, startConfiguration, storageWarning, substring, supportsDeferredForeignKeyConstraints, supportsDeferredUniqueConstraints, supportsDeleteAction, supportsLocking, supportsRandomAccessResultSet, supportsUpdateAction, toBulkOperation, toDelete, toNativeJoin, toOperation, toOperation, toSelect, toSelect, 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

allowConcurrentRead

public boolean allowConcurrentRead
This setting inserts "BYPASS" after every "SELECT". This allows for multiple transactional reads of the same row from different connections at the expense of loss of pessimistic locking. Defaults to false.

Constructor Detail

EmpressDictionary

public EmpressDictionary()
Method Detail

isSystemIndex

public boolean isSystemIndex(String name,
                             Table table)
Description copied from class: DBDictionary
This method is used to filter system indexes from database metadata. Return true if the given index name represents a system index that should not appear in the schema definition. Returns false by default.

Overrides:
isSystemIndex in class DBDictionary
Parameters:
name - the index name
table - the index table

toSelect

public SQLBuffer toSelect(SQLBuffer selects,
                          JDBCFetchConfiguration fetch,
                          SQLBuffer from,
                          SQLBuffer where,
                          SQLBuffer group,
                          SQLBuffer having,
                          SQLBuffer order,
                          boolean distinct,
                          boolean forUpdate,
                          long startIdx,
                          long endIdx)
Description copied from class: DBDictionary
Combine the given components into a SELECT statement.

Overrides:
toSelect in class DBDictionary

getDropColumnSQL

public String[] getDropColumnSQL(Column column)
Description copied from class: DBDictionary
Return a series of SQL statements to drop the given column from its table. Return an empty array if operation not supported. Returns ALTER TABLE <table name> DROP COLUMN <col name> by default.

Overrides:
getDropColumnSQL in class DBDictionary

setFloat

public void setFloat(PreparedStatement stmnt,
                     int idx,
                     float val,
                     Column col)
              throws SQLException
Description copied from class: DBDictionary
Set the given value as a parameter to the statement.

Overrides:
setFloat in class DBDictionary
Throws:
SQLException

setDouble

public void setDouble(PreparedStatement stmnt,
                      int idx,
                      double val,
                      Column col)
               throws SQLException
Description copied from class: DBDictionary
Set the given value as a parameter to the statement.

Overrides:
setDouble in class DBDictionary
Throws:
SQLException


Copyright © 2006-2008 Apache Software Foundation. All Rights Reserved.