Package org.apache.cayenne.access.translator.ejbql

Class EJBQLSelectColumnsTranslator

java.lang.Object

org.apache.cayenne.ejbql.EJBQLBaseVisitor

org.apache.cayenne.access.translator.ejbql.EJBQLSelectColumnsTranslator

All Implemented Interfaces:

EJBQLExpressionVisitor

public class EJBQLSelectColumnsTranslator
extends EJBQLBaseVisitor

Translator of the EJBQL select clause.

Since:

3.0

Field Summary

Fields

Modifier and Type	Field	Description
protected EJBQLTranslationContext	context

Fields inherited from class org.apache.cayenne.ejbql.EJBQLBaseVisitor

continueFlag

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	EJBQLSelectColumnsTranslator(EJBQLTranslationContext context)

Method Summary

Modifier and Type	Method	Description
void	appendColumn(String javaType, String alias, DbAttribute dbAttribute, String columnAlias)
boolean	visitAggregate(EJBQLExpression expression)
boolean	visitDbPath(EJBQLExpression expression, int finishedChildIndex)
boolean	visitIdentifier(EJBQLExpression expression)
boolean	visitPath(EJBQLExpression expression, int finishedChildIndex)	Called on visiting "path" expression and also after visiting every expression child.
boolean	visitSelectExpression(EJBQLExpression expression)

Methods inherited from class org.apache.cayenne.ejbql.EJBQLBaseVisitor

visitAbs, visitAbstractSchemaName, visitAdd, visitAll, visitAnd, visitAny, visitAscending, visitAverage, visitBetween, visitBooleanLiteral, visitClassName, visitConcat, visitConstructor, visitConstructorParameter, visitConstructorParameters, visitCount, visitCurrentDate, visitCurrentTime, visitCurrentTimestamp, visitDecimalLiteral, visitDelete, visitDescending, visitDistinct, visitDivide, visitEquals, visitEscapeCharacter, visitExists, visitFrom, visitFromItem, visitGreaterOrEqual, visitGreaterThan, visitGroupBy, visitHaving, visitIdentificationVariable, visitIn, visitInnerFetchJoin, visitInnerJoin, visitIntegerLiteral, visitIsEmpty, visitIsNull, visitLength, visitLessOrEqual, visitLessThan, visitLike, visitLocate, visitLower, visitMax, visitMemberOf, visitMin, visitMod, visitMultiply, visitNamedInputParameter, visitNamedInputParameterForIn, visitNegative, visitNot, visitNotEquals, visitOr, visitOrderBy, visitOrderByItem, visitOuterFetchJoin, visitOuterJoin, visitPatternValue, visitPositionalInputParameter, visitPositionalInputParameterForIn, visitSelect, visitSelectClause, visitSelectExpressions, visitSize, visitSqrt, visitStringLiteral, visitSubselect, visitSubstring, visitSubtract, visitSum, visitTok, visitTrim, visitTrimBoth, visitTrimCharacter, visitTrimLeading, visitTrimTrailing, visitUpdate, visitUpdateField, visitUpdateItem, visitUpdateValue, visitUpper, visitWhere

Methods inherited from class java.lang.Object

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

Field Details

context

protected EJBQLTranslationContext context

Constructor Details

EJBQLSelectColumnsTranslator

protected EJBQLSelectColumnsTranslator(EJBQLTranslationContext context)

Method Details

visitSelectExpression

public boolean visitSelectExpression(EJBQLExpression expression)

Specified by:

visitSelectExpression in interface EJBQLExpressionVisitor

Overrides:

visitSelectExpression in class EJBQLBaseVisitor

visitAggregate

public boolean visitAggregate(EJBQLExpression expression)

Specified by:

visitAggregate in interface EJBQLExpressionVisitor

Overrides:

visitAggregate in class EJBQLBaseVisitor

visitDbPath

public boolean visitDbPath(EJBQLExpression expression,
 int finishedChildIndex)

Specified by:

visitDbPath in interface EJBQLExpressionVisitor

Overrides:

visitDbPath in class EJBQLBaseVisitor

visitPath

public boolean visitPath(EJBQLExpression expression,
 int finishedChildIndex)

Description copied from interface: EJBQLExpressionVisitor

Called on visiting "path" expression and also after visiting every expression child.

Specified by:

visitPath in interface EJBQLExpressionVisitor

Overrides:

visitPath in class EJBQLBaseVisitor

Parameters:

expression - a "path" node being visited.

finishedChildIndex - "-1" when the expression node is visited for the first time, before its children; otherwise this is an index of a child just visited.

visitIdentifier

public boolean visitIdentifier(EJBQLExpression expression)

Specified by:

visitIdentifier in interface EJBQLExpressionVisitor

Overrides:

visitIdentifier in class EJBQLBaseVisitor

appendColumn

public void appendColumn(String javaType,
 String alias,
 DbAttribute dbAttribute,
 String columnAlias)