public final class ExistsExpression extends AbstractSingleEncapsulatedExpression
true only if the result of the
subquery consists of one or more values and that is false otherwise.
exists_expression ::= [NOT] EXISTS(subquery)COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCOREABS, ALL, AND, ANY, AS, AS_OF, ASC, AVG, BETWEEN, BIT_LENGTH, BOTH, CASE, CAST, CHAR_LENGTH, CHARACTER_LENGTH, CLASS, COALESCE, COLUMN, CONCAT, CONNECT_BY, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, DELETE, DELETE_FROM, DESC, DIFFERENT, DISTINCT, DIVISION, ELSE, EMPTY, END, ENTRY, EQUAL, ESCAPE, EXCEPT, EXISTS, EXTRACT, FALSE, FETCH, FIRST, FROM, FUNC, FUNCTION, GREATER_THAN, GREATER_THAN_OR_EQUAL, GROUP_BY, HAVING, IN, INDEX, INNER, INNER_JOIN, INNER_JOIN_FETCH, INTERSECT, IS, IS_EMPTY, IS_NOT_EMPTY, IS_NOT_NULL, IS_NULL, JOIN, JOIN_FETCH, KEY, LAST, LEADING, LEFT, LEFT_JOIN, LEFT_JOIN_FETCH, LEFT_OUTER_JOIN, LEFT_OUTER_JOIN_FETCH, LENGTH, LIKE, LOCATE, LOWER, LOWER_THAN, LOWER_THAN_OR_EQUAL, MAX, MEMBER, MEMBER_OF, MIN, MINUS, MOD, MULTIPLICATION, NAMED_PARAMETER, NEW, NOT, NOT_BETWEEN, NOT_EQUAL, NOT_EXISTS, NOT_IN, NOT_LIKE, NOT_MEMBER, NOT_MEMBER_OF, NULL, NULLIF, NULLS, NULLS_FIRST, NULLS_LAST, OBJECT, OF, ON, OPERATOR, OR, ORDER_BY, ORDER_SIBLINGS_BY, OUTER, PLUS, POSITION, POSITIONAL_PARAMETER, QUOTE, REGEXP, SCN, SELECT, SET, SIZE, SOME, SQL, SQRT, START_WITH, SUBSTRING, SUM, TABLE, THEN, TIMESTAMP, TRAILING, TREAT, TRIM, TRUE, TYPE, UNION, UNKNOWN, UPDATE, UPPER, VALUE, WHEN, WHERE| Constructor and Description |
|---|
ExistsExpression(AbstractExpression parent)
Creates a new
ExistsExpression. |
| Modifier and Type | Method and Description |
|---|---|
void |
accept(ExpressionVisitor visitor)
Visits this
Expression by the given visitor. |
java.lang.String |
getActualNotIdentifier()
Returns the actual NOT identifier found in the string representation of the JPQL query,
which has the actual case that was used.
|
java.lang.String |
getEncapsulatedExpressionQueryBNFId()
Returns the BNF used to parse the encapsulated expression.
|
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this
Expression. |
boolean |
hasNot()
Determines whether the identifier NOT was parsed.
|
protected void |
parse(WordParser wordParser,
boolean tolerant)
Parses the query by starting at the current position, which is part of the given
WordParser. |
protected AbstractExpression |
parse(WordParser wordParser,
java.lang.String queryBNFId,
boolean tolerant)
Parses the given text by using the specified BNF.
|
acceptChildren, addChildrenTo, addOrderedEncapsulatedExpressionTo, findQueryBNF, getExpression, hasEncapsulatedExpression, hasExpression, parseEncapsulatedExpression, removeEncapsulatedExpression, setExpression, toParsedTextEncapsulatedExpressionaddOrderedChildrenTo, areLogicalIdentifiersSupported, getActualIdentifier, getIdentifier, hasLeftParenthesis, hasRightParenthesis, hasSpaceAfterIdentifier, isParsingComplete, shouldParseRightParenthesis, toParsedTextacceptUnknownVisitor, acceptUnknownVisitor, buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, calculatePosition, children, findFallBackExpressionFactory, getExpressionFactory, getExpressionRegistry, getGrammar, getIdentifierVersion, getJPAVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, getText, handleAggregate, handleCollection, isAncestor, isIdentifier, isNull, isTolerant, isUnknown, isVirtual, orderedChildren, parseUsingExpressionFactory, populatePosition, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toStringpublic ExistsExpression(AbstractExpression parent)
ExistsExpression.parent - The parent of this expressionpublic void accept(ExpressionVisitor visitor)
Expression by the given visitor.visitor - The ExpressionVisitor to visit this objectpublic java.lang.String getEncapsulatedExpressionQueryBNFId()
getEncapsulatedExpressionQueryBNFId in class AbstractSingleEncapsulatedExpressionpublic java.lang.String getActualNotIdentifier()
public JPQLQueryBNF getQueryBNF()
Expression.JPQLQueryBNF, which represents the grammar of this Expressionpublic boolean hasNot()
true if the identifier NOT was parsed; false otherwiseprotected void parse(WordParser wordParser, boolean tolerant)
WordParser.parse in class AbstractEncapsulatedExpressionwordParser - The text to parse based on the current position of the cursortolerant - Determines whether the parsing system should be tolerant, meaning if it should
try to parse invalid or incomplete queriesprotected AbstractExpression parse(WordParser wordParser, java.lang.String queryBNFId, boolean tolerant)
parse in class AbstractExpressionwordParser - The text to parse based on the current position of the cursorqueryBNFId - The unique identifier of the JPQLQueryBNF that is used to determine
how to parse the text at the current cursor position within the JPQL querytolerant - Determines whether the parsing system should be tolerant, meaning if it should
try to parse invalid or incomplete queriesExpression representing the given sub-query