java.lang.Object
- org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
- - org.eclipse.persistence.jpa.jpql.parser.UpdateClause

All Implemented Interfaces:

Expression
```
public final class UpdateClause
extends AbstractExpression
```
This is the update clause of the update statement.
An UPDATE statement provides bulk operations over sets of entities of a single entity class (together with its subclasses, if any). Only one entity abstract schema type may be specified in the UPDATE clause.
BNF: update_clause ::= UPDATE abstract_schema_name [[AS] identification_variable] SET update_item {, update_item}*

Since:

2.3

Version:

2.5

Author:

Pascal Filion

See Also:

UpdateStatement, UpdateItem

Field Summary
- 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
- 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

Constructor Summary

Constructors
Constructor Description

UpdateClause(AbstractExpression parent)
Creates a new UpdateClause.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(ExpressionVisitor visitor)`	Visits this `Expression` by the given `visitor`.
`void`	`acceptChildren(ExpressionVisitor visitor)`	Visits the children of this `Expression`.
`CollectionExpression`	`buildCollectionExpression()`	Creates a new `CollectionExpression` that will wrap the single update item.
`JPQLQueryBNF`	`findQueryBNF(Expression expression)`	Retrieves the `JPQLQueryBNF` that represents the fragment of this `Expression` that was used when parsing the given `Expression`.
`java.lang.String`	`getActualSetIdentifier()`	Returns the actual SET found in the string representation of the JPQL query, which has the actual case that was used.
`java.lang.String`	`getActualUpdateIdentifier()`	Returns the actual UPDATE found in the string representation of the JPQL query, which has the actual case that was used.
`JPQLQueryBNF`	`getQueryBNF()`	Returns the BNF of this `Expression`.
`Expression`	`getRangeVariableDeclaration()`	Returns the `Expression` representing the range variable declaration.
`Expression`	`getUpdateItems()`	Returns the `Expression` representing the single update item or the collection of update items.
`boolean`	`hasRangeVariableDeclaration()`	Determines whether the range variable declaration was parsed.
`boolean`	`hasSet()`	Determines whether SET was parsed or not.
`boolean`	`hasSpaceAfterRangeVariableDeclaration()`	Determines whether a whitespace was found after the abstract schema name declaration.
`boolean`	`hasSpaceAfterSet()`	Determines whether a whitespace was found after SET.
`boolean`	`hasSpaceAfterUpdate()`	Determines whether a whitespace was found after the identifier UPDATE.
`boolean`	`hasUpdateItems()`	Determines whether the update items section of the query was parsed.

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

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - UpdateClause
```
public UpdateClause(AbstractExpression parent)
```
    Creates a new UpdateClause.
    
    Parameters:
    
    parent - The parent of this expression
- Method Detail
  - accept
```
public void accept(ExpressionVisitor visitor)
```
    Visits this Expression by the given visitor.
    
    Parameters:
    
    visitor - The ExpressionVisitor 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() is called.
    This does not traverse the Expression sub-hierarchy, use a subclass of AbstractTraverseChildrenVisitor in order to traverse the entire sub-hierarchy.
    
    Parameters:
    
    visitor - The visitor to visit the children of this object.
  - buildCollectionExpression
```
public CollectionExpression buildCollectionExpression()
```
    Creates a new CollectionExpression that will wrap the single update item.
    
    Returns:
    
    The single update item represented by a temporary collection
  - findQueryBNF
```
public JPQLQueryBNF findQueryBNF(Expression expression)
```
    Retrieves the JPQLQueryBNF that represents the fragment of this Expression that was used when parsing the given Expression.
    
    Specified by:
    
    findQueryBNF in interface Expression
    
    Overrides:
    
    findQueryBNF in class AbstractExpression
    
    Parameters:
    
    expression - The Expression that is a descendant of this one
    
    Returns:
    
    The JPQLQueryBNF that was used to parse the given expression
  - getActualSetIdentifier
```
public java.lang.String getActualSetIdentifier()
```
    Returns the actual SET found in the string representation of the JPQL query, which has the actual case that was used.
    
    Returns:
    
    The SET identifier that was actually parsed, or an empty string if it was not parsed
  - getActualUpdateIdentifier
```
public java.lang.String getActualUpdateIdentifier()
```
    Returns the actual UPDATE found in the string representation of the JPQL query, which has the actual case that was used.
    
    Returns:
    
    The UPDATE identifier that was actually parsed
  - getQueryBNF
```
public JPQLQueryBNF getQueryBNF()
```
    Returns the BNF of this Expression.
    
    Returns:
    
    The JPQLQueryBNF, which represents the grammar of this Expression
  - getRangeVariableDeclaration
```
public Expression getRangeVariableDeclaration()
```
    Returns the Expression representing the range variable declaration.
    
    Returns:
    
    The expression that was parsed representing the range variable declaration
  - getUpdateItems
```
public Expression getUpdateItems()
```
    Returns the Expression representing the single update item or the collection of update items.
    
    Returns:
    
    The expression that was parsed representing the single or multiple update items
  - hasRangeVariableDeclaration
```
public boolean hasRangeVariableDeclaration()
```
    Determines whether the range variable declaration was parsed.
    
    Returns:
    
    true if the range variable declaration was parsed; false otherwise
  - hasSet
```
public boolean hasSet()
```
    Determines whether SET was parsed or not.
    
    Returns:
    
    true if SET was part of the query; false otherwise
  - hasSpaceAfterRangeVariableDeclaration
```
public boolean hasSpaceAfterRangeVariableDeclaration()
```
    Determines whether a whitespace was found after the abstract schema name declaration.
    
    Returns:
    
    true if there was a whitespace after the abstract schema name declaration; false otherwise
  - hasSpaceAfterSet
```
public boolean hasSpaceAfterSet()
```
    Determines whether a whitespace was found after SET.
    
    Returns:
    
    true if there was a whitespace after SET; false otherwise
  - hasSpaceAfterUpdate
```
public boolean hasSpaceAfterUpdate()
```
    Determines whether a whitespace was found after the identifier UPDATE.
    
    Returns:
    
    true if there was a whitespace after the identifier UPDATE; false otherwise
  - hasUpdateItems
```
public boolean hasUpdateItems()
```
    Determines whether the update items section of the query was parsed.
    
    Returns:
    
    true if something was parsed after SET even if it was a malformed expression; false if nothing was parsed

Class UpdateClause

Field Summary

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

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

Constructor Summary

Method Summary

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

Methods inherited from class java.lang.Object

Constructor Detail

UpdateClause

Method Detail

accept

acceptChildren

buildCollectionExpression

findQueryBNF

getActualSetIdentifier

getActualUpdateIdentifier

getQueryBNF

getRangeVariableDeclaration

getUpdateItems

hasRangeVariableDeclaration

hasSet

hasSpaceAfterRangeVariableDeclaration

hasSpaceAfterSet

hasSpaceAfterUpdate

hasUpdateItems