OracleQualifierTranslator

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Deprecated

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org.objectstyle.cayenne.dba.oracle
Class OracleQualifierTranslator

java.lang.Object
  org.objectstyle.cayenne.access.trans.QueryAssemblerHelper
      org.objectstyle.cayenne.access.trans.QualifierTranslator
          org.objectstyle.cayenne.dba.oracle.OracleQualifierTranslator

All Implemented Interfaces:: org.objectstyle.cayenne.exp.TraversalHandler

public class OracleQualifierTranslator
extends org.objectstyle.cayenne.access.trans.QualifierTranslator

Sequence-based primary key generator implementation for Oracle. Uses Oracle sequences to generate primary key values. This approach is at least 50% faster when tested with Oracle compared to the lookup table approach.

When using Cayenne key caching mechanism, make sure that sequences in the database have "INCREMENT BY" greater or equal to OraclePkGenerator "pkCacheSize" property value. If this is not the case, you will need to adjust PkGenerator value accordingly. For example when sequence is incremented by 1 each time, use the following code:

 dataNode.getAdapter().getPkGenerator().setPkCacheSize(1);

Field Summary

Fields inherited from class org.objectstyle.cayenne.access.trans.QualifierTranslator

matchingObject, objectMatchTranslator, translateParentQual

Fields inherited from class org.objectstyle.cayenne.access.trans.QueryAssemblerHelper

queryAssembler

Constructor Summary

OracleQualifierTranslator()


Method Summary

protected void processColumn(java.lang.StringBuffer buf, org.objectstyle.cayenne.map.DbAttribute dbAttr)
          Adds special handling of CHAR columns.

protected void processColumn(java.lang.StringBuffer buf, org.objectstyle.cayenne.map.DbAttribute dbAttr, org.objectstyle.cayenne.map.DbRelationship rel)
          Adds special handling of CHAR columns.

Methods inherited from class org.objectstyle.cayenne.access.trans.QualifierTranslator

appendLiteral, appendObjectMatch, detectObjectMatch, doTranslation, endBinaryNode, endListNode, endTernaryNode, endUnaryNode, extractQualifier, finishedChild, getObjEntity, isTranslateParentQual, objectNode, processRelTermination, setTranslateParentQual, startBinaryNode, startListNode, startTernaryNode, startUnaryNode

Methods inherited from class org.objectstyle.cayenne.access.trans.QueryAssemblerHelper

appendDbPath, appendLiteralDirect, appendObjPath, getDbEntity, getQueryAssembler, paramsDbType, processColumn, processRelTermination, setQueryAssembler

Methods inherited from class java.lang.Object

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

Constructor Detail