Package org.apache.cayenne.dba.oracle

Class OracleQualifierTranslator

java.lang.Object

org.apache.cayenne.access.translator.select.QueryAssemblerHelper

org.apache.cayenne.access.translator.select.QualifierTranslator

org.apache.cayenne.access.translator.select.TrimmingQualifierTranslator

org.apache.cayenne.dba.oracle.OracleQualifierTranslator

All Implemented Interfaces:

TraversalHandler

public class OracleQualifierTranslator
extends TrimmingQualifierTranslator

Oracle qualifier translator. In particular, trims INs with more than 1000 elements to an OR-set of INs with <= 1000 elements

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	OracleQualifierTranslator.INTrimmer

Field Summary

Fields inherited from class org.apache.cayenne.access.translator.select.TrimmingQualifierTranslator

trimFunction

Fields inherited from class org.apache.cayenne.access.translator.select.QualifierTranslator

caseInsensitive, matchingObject, objectMatchTranslator, qualifier, useAliasForExpressions, waitingForEndNode

Fields inherited from class org.apache.cayenne.access.translator.select.QueryAssemblerHelper

out, queryAssembler, strategy

Constructor Summary

Constructors

Constructor	Description
OracleQualifierTranslator(QueryAssembler queryAssembler)

Method Summary

Modifier and Type	Method	Description
protected void	appendExtractFunction(ASTExtract functionExpression)	Special case for extract date/time parts functions as they have many variants
protected void	appendFunction(ASTFunctionCall functionExpression)	Append function name to result SQL Override this method to rename or skip function if generic name isn't supported on target DB.
protected void	appendFunctionArgDivider(ASTFunctionCall functionExpression)	Append divider between function arguments.
protected void	clearLastFunctionArgDivider(ASTFunctionCall functionExpression)	Clear last divider as we currently don't now position of argument until parent element is ended.
protected void	doAppendPart(Expression rootNode)	Translates query qualifier to SQL WHERE clause.
void	endNode(Expression node, Expression parentNode)	Called during the traversal after an expression node children processing is finished.
protected boolean	parenthesisNeeded(Expression node, Expression parentNode)

Methods inherited from class org.apache.cayenne.access.translator.select.TrimmingQualifierTranslator

getTrimFunction, processColumn, processColumnWithQuoteSqlIdentifiers, setTrimFunction

Methods inherited from class org.apache.cayenne.access.translator.select.QualifierTranslator

appendFunctionArg, appendLiteral, appendObjectMatch, detectObjectMatch, doAppendPart, extractQualifier, finishedChild, objectNode, operandForBitwiseAnd, operandForBitwiseLeftShift, operandForBitwiseNot, operandForBitwiseOr, operandForBitwiseRightShift, operandForBitwiseXor, processRelTermination, setCaseInsensitive, setQualifier, setUseAliasForExpressions, startNode

Methods inherited from class org.apache.cayenne.access.translator.select.QueryAssemblerHelper

appendDbPath, appendLikeEscapeCharacter, appendLiteralDirect, appendObjPath, appendPart, getDbEntity, getObjEntity, paramsDbType, processRelTermination, setForceJoinForRelations

Methods inherited from class java.lang.Object

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

Constructor Details

OracleQualifierTranslator

public OracleQualifierTranslator(QueryAssembler queryAssembler)

Method Details

doAppendPart

protected void doAppendPart(Expression rootNode)

Description copied from class: QualifierTranslator

Translates query qualifier to SQL WHERE clause. Qualifier is a method parameter.

Overrides:

doAppendPart in class QualifierTranslator

endNode

public void endNode(Expression node,
Expression parentNode)

Description copied from interface: TraversalHandler

Called during the traversal after an expression node children processing is finished.

Specified by:

endNode in interface TraversalHandler

Overrides:

endNode in class QualifierTranslator

Since:

4.0

appendFunction

protected void appendFunction(ASTFunctionCall functionExpression)

Description copied from class: QualifierTranslator

Append function name to result SQL Override this method to rename or skip function if generic name isn't supported on target DB.

Overrides:

appendFunction in class QualifierTranslator

Since:

4.0

appendFunctionArgDivider

protected void appendFunctionArgDivider(ASTFunctionCall functionExpression)

Description copied from class: QualifierTranslator

Append divider between function arguments. In overriding methods can be replaced e.g. for " || " for CONCAT operation

Overrides:

appendFunctionArgDivider in class QualifierTranslator

Since:

4.0

clearLastFunctionArgDivider

protected void clearLastFunctionArgDivider(ASTFunctionCall functionExpression)

Description copied from class: QualifierTranslator

Clear last divider as we currently don't now position of argument until parent element is ended.

Overrides:

clearLastFunctionArgDivider in class QualifierTranslator

Since:

4.0

parenthesisNeeded

protected boolean parenthesisNeeded(Expression node,
Expression parentNode)

Overrides:

parenthesisNeeded in class QualifierTranslator

appendExtractFunction

protected void appendExtractFunction(ASTExtract functionExpression)

Description copied from class: QualifierTranslator

Special case for extract date/time parts functions as they have many variants

Overrides:

appendExtractFunction in class QualifierTranslator