Class StateFieldPathExpression
- java.lang.Object
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- org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
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- org.eclipse.persistence.jpa.jpql.parser.AbstractPathExpression
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- org.eclipse.persistence.jpa.jpql.parser.StateFieldPathExpression
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- All Implemented Interfaces:
Expression
public final class StateFieldPathExpression extends AbstractPathExpression
Asingle_valued_association_field
is designated by the name of an association-field in a one-to-one or many-to-one relationship. The type of asingle_valued_association_field
and thus asingle_valued_association_path_expression
is the abstract schema type of the related entity. Acollection_valued_association_field
is designated by the name of an association-field in a one-to-many or a many-to-many relationship. The type of acollection_valued_association_field
is a collection of values of the abstract schema type of the related entity. Anembedded_class_state_field
is designated by the name of an entity-state field that corresponds to an embedded class. Navigation to a related entity results in a value of the related entity's abstract schema type.BNF:state_field_path_expression ::= {identification_variable | single_valued_association_path_expression}.state_field
BNF:single_valued_association_path_expression ::= identification_variable.{single_valued_association_field.}*single_valued_association_field
- Since:
- 2.3
- Version:
- 2.4
- Author:
- Pascal Filion
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Field Summary
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Fields inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE
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Fields inherited from interface org.eclipse.persistence.jpa.jpql.parser.Expression
ABS, 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
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Constructor Summary
Constructors Constructor Description StateFieldPathExpression(AbstractExpression parent, java.lang.String paths)
Creates a newStateFieldPathExpression
.StateFieldPathExpression(AbstractExpression parent, AbstractExpression expression)
Creates a newStateFieldPathExpression
.StateFieldPathExpression(AbstractExpression parent, AbstractExpression expression, java.lang.String paths)
Creates a newStateFieldPathExpression
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
accept(ExpressionVisitor visitor)
Visits thisExpression
by the givenvisitor
.JPQLQueryBNF
getQueryBNF()
Returns the BNF of thisExpression
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Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractPathExpression
acceptChildren, endsWithDot, findQueryBNF, getIdentificationVariable, getPath, hasIdentificationVariable, hasVirtualIdentificationVariable, paths, pathSize, startsWithDot, toParsedText
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Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
children, getGrammar, getIdentifierVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, isAncestor, orderedChildren, populatePosition, toActualText, toParsedText, toString
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Constructor Detail
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StateFieldPathExpression
public StateFieldPathExpression(AbstractExpression parent, AbstractExpression expression)
Creates a newStateFieldPathExpression
.- Parameters:
parent
- The parent of this expressionexpression
- The identification variable that was already parsed, which means the beginning of the parsing should start with a dot
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StateFieldPathExpression
public StateFieldPathExpression(AbstractExpression parent, java.lang.String paths)
Creates a newStateFieldPathExpression
.- Parameters:
parent
- The parent of this expressionpaths
- The path expression that is following the identification variable
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StateFieldPathExpression
public StateFieldPathExpression(AbstractExpression parent, AbstractExpression expression, java.lang.String paths)
Creates a newStateFieldPathExpression
.- Parameters:
parent
- The parent of this expressionexpression
- The identification variable that was already parsed, which means the beginning of the parsing should start with a dotpaths
- The path expression that is following the identification variable
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Method Detail
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accept
public void accept(ExpressionVisitor visitor)
Visits thisExpression
by the givenvisitor
.- Parameters:
visitor
- TheExpressionVisitor
to visit this object
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getQueryBNF
public JPQLQueryBNF getQueryBNF()
Returns the BNF of thisExpression
.- Returns:
- The
JPQLQueryBNF
, which represents the grammar of thisExpression
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