org.eclipse.persistence.jpa.internal.jpql.parser

Class UpdateItem

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.UpdateItem

All Implemented Interfaces:

Expression

public final class UpdateItem
extends AbstractExpression

The new_value specified for an update operation must be compatible in type with the field to which it is assigned.

BNF: update_item ::= [identification_variable.]{state_field | single_valued_association_field} = new_value

Since:

2.3

Version:

2.3

Author:

Pascal Filion

See Also:

UpdateClause

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression

COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE

Fields inherited from interface org.eclipse.persistence.jpa.internal.jpql.parser.Expression

ABS, ALL, AND, ANY, AS, ASC, AVG, BETWEEN, BIT_LENGTH, BOTH, CASE, CHAR_LENGTH, CHARACTER_LENGTH, CLASS, COALESCE, CONCAT, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, DELETE, DELETE_FROM, DESC, DIFFERENT, DISTINCT, DIVISION, ELSE, EMPTY, END, ENTRY, EQUAL, ESCAPE, EXISTS, FALSE, FETCH, FROM, FUNC, GREATER_THAN, GREATER_THAN_OR_EQUAL, GROUP_BY, HAVING, IN, INDEX, INNER, INNER_JOIN, INNER_JOIN_FETCH, IS, IS_EMPTY, IS_NOT_EMPTY, IS_NOT_NULL, IS_NULL, JOIN, JOIN_FETCH, KEY, 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_EXISTS, NOT_IN, NOT_LIKE, NOT_MEMBER, NOT_MEMBER_OF, NULL, NULLIF, OBJECT, OF, OR, ORDER_BY, OUTER, PLUS, POSITION, POSITIONAL_PARAMETER, QUOTE, SELECT, SET, SIZE, SOME, SQRT, SUBSTRING, SUM, THEN, TRAILING, TREAT, TRIM, TRUE, TYPE, UNKNOWN, UPDATE, UPPER, VALUE, WHEN, WHERE

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(ExpressionVisitor visitor) Visits this Expression by the given visitor.
void	acceptChildren(ExpressionVisitor visitor) Visits the children of this Expression.
Expression	getNewValue() Returns the Expression representing the new value, which is the new value of the property.
JPQLQueryBNF	getQueryBNF() Returns the BNF of this Expression.
Expression	getStateFieldPathExpression() Returns the Expression representing the state field path expression, which is the property that should get updated.
boolean	hasEqualSign() Determines whether the equal sign was parsed or not.
boolean	hasNewValue() Determines whether the new value section of the query was parsed.
boolean	hasSpaceAfterEqualSign() Determines whether a whitespace was parsed after the equal sign or not.
boolean	hasSpaceAfterStateFieldPathExpression() Determines whether a whitespace was parsed after the state field path expression not.
boolean	hasStateFieldPathExpression() Determines whether the state field was parsed.

Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression

children, findQueryBNF, getChildren, getParent, getRoot, identifierRole, identifiers, identifierVersion, isAncestor, isIdentifier, isVirtual, orderedChildren, queryBNF, toActualText, toParsedText, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

accept

public void accept(ExpressionVisitor visitor)

Visits this Expression by the given visitor.

Parameters:

visitor - The visitor to visit this object

acceptChildren

public void acceptChildren(ExpressionVisitor visitor)

Visits the children of this Expression. This method can be used to optimize traversing the children since a new list is not created every time Expression.children() or Expression.getChildren() is called.

This does not traverse the Expression sub-hierarchy, use an subclass of AbstractTraverseChildrenVisitor in order to traverse the entire sub-hierarchy.

Parameters:

visitor - The visitor to visit the children of this object.

getNewValue

public Expression getNewValue()

Returns the Expression representing the new value, which is the new value of the property.

Returns:

The expression for the new value

getQueryBNF

public JPQLQueryBNF getQueryBNF()

Returns the BNF of this Expression.

Specified by:

getQueryBNF in class AbstractExpression

Returns:

The JPQLQueryBNF, which represents the grammar of this Expression

getStateFieldPathExpression

public Expression getStateFieldPathExpression()

Returns the Expression representing the state field path expression, which is the property that should get updated.

Returns:

The expression for the state field path expression

hasEqualSign

public boolean hasEqualSign()

Determines whether the equal sign was parsed or not.

Returns:

true if the equal sign was parsed; false otherwise

hasNewValue

public boolean hasNewValue()

Determines whether the new value section of the query was parsed.

Returns:

true the new value was parsed; false if nothing was parsed

hasSpaceAfterEqualSign

public boolean hasSpaceAfterEqualSign()

Determines whether a whitespace was parsed after the equal sign or not.

Returns:

true if there was a whitespace after the equal sign; false otherwise

hasSpaceAfterStateFieldPathExpression

public boolean hasSpaceAfterStateFieldPathExpression()

Determines whether a whitespace was parsed after the state field path expression not.

Returns:

true if there was a whitespace after the state field path expression; false otherwise

hasStateFieldPathExpression

public boolean hasStateFieldPathExpression()

Determines whether the state field was parsed.

Returns:

true the state field was parsed; false otherwise