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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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java.lang.Object
org.eclipse.persistence.jpa.internal.jpql.parser.StringExpression
org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.internal.jpql.parser.AbstractEncapsulatedExpression
org.eclipse.persistence.jpa.internal.jpql.parser.AbstractSingleEncapsulatedExpression
org.eclipse.persistence.jpa.internal.jpql.parser.AggregateFunction
org.eclipse.persistence.jpa.internal.jpql.parser.CountFunction
public final class CountFunction
One of the aggregate functions. The return type of this function is a Long
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expression ::= COUNT ([DISTINCT] identification_variable | state_field_path_expression | single_valued_object_path_expression)
Field Summary |
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Fields inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression |
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COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE |
Constructor Summary | |
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CountFunction(AbstractExpression parent) Creates a new CountFunction . |
Method Summary | |
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void |
accept(ExpressionVisitor visitor) Visits this Expression by the given visitor . |
(package private) AbstractExpression |
buildEncapsulatedExpression(WordParser wordParser, java.lang.String word) Creates the AbstractExpression to represent the given word. |
java.lang.String |
encapsulatedExpressionBNF() Returns the BNF used to parse the encapsulated expression. |
(package private) java.lang.String |
parseIdentifier(WordParser wordParser) Parses the identifier of this expression. |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AggregateFunction |
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addOrderedEncapsulatedExpressionTo, getQueryBNF, hasDistinct, hasSpaceAfterDistinct, parseEncapsulatedExpression, toParsedTextEncapsulatedExpression |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractSingleEncapsulatedExpression |
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acceptChildren, addChildrenTo, getExpression, hasEncapsulatedExpression, hasExpression, setExpression |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractEncapsulatedExpression |
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addOrderedChildrenTo, areLogicalIdentifiersSupported, getIdentifier, hasLeftParenthesis, hasRightParenthesis, isParsingComplete, parse, toParsedText |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression |
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buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, children, expressionFactory, expressionFactoryForIdentifier, findQueryBNF, getChildren, getJPAVersion, getParent, getRoot, getText, handleAggregate, identifierRole, identifiers, identifiers, identifierVersion, isAncestor, isIdentifier, isNull, isTolerant, isUnknown, isVirtual, orderedChildren, parse, parseSingleExpression, populatePosition, queryBNF, readdLeadingSpaces, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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CountFunction(AbstractExpression parent)
CountFunction
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parent
- The parent of this expressionMethod Detail |
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public void accept(ExpressionVisitor visitor)
Expression
by the given visitor
.visitor
- The visitor
to visit this objectAbstractExpression buildEncapsulatedExpression(WordParser wordParser, java.lang.String word)
AbstractExpression
to represent the given word.buildEncapsulatedExpression
in class AggregateFunction
word
- The word that was parsedAbstractExpression
public java.lang.String encapsulatedExpressionBNF()
encapsulatedExpressionBNF
in class AggregateFunction
java.lang.String parseIdentifier(WordParser wordParser)
parseIdentifier
in class AbstractEncapsulatedExpression
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