|
EclipseLink 2.4.1, build 'v20121003-ad44345' API Reference | ||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||
java.lang.Objectorg.eclipse.persistence.jpa.jpql.parser.AbstractExpression
org.eclipse.persistence.jpa.jpql.parser.DeleteClause
public final class DeleteClause
This is the delete clause of the delete statement.
A DELETE 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.
delete_clause ::= DELETE FROM abstract_schema_name [[AS] identification_variable]
Example: DELETE FROM Employee e
| 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 |
| Constructor Summary | |
|---|---|
DeleteClause(AbstractExpression parent)
Creates a new DeleteClause. |
|
| Method Summary | |
|---|---|
void |
accept(ExpressionVisitor visitor)
Visits this Expression by the given visitor. |
void |
acceptChildren(ExpressionVisitor visitor)
Visits the children of this Expression. |
protected void |
addChildrenTo(java.util.Collection<Expression> children)
Adds the children of this AbstractExpression to the given collection. |
protected void |
addOrderedChildrenTo(java.util.List<Expression> children)
Adds the children of this AbstractExpression to the given list. |
java.lang.String |
getActualDeleteIdentifier()
Returns the actual DELETE found in the string representation of the JPQL query, which has the actual case that was used. |
java.lang.String |
getActualFromIdentifier()
Returns the actual FROM identifier 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. |
boolean |
hasFrom()
Determines whether the identifier FROM was parsed. |
boolean |
hasRangeVariableDeclaration()
Determines whether the range variable declaration was parsed. |
boolean |
hasSpaceAfterDelete()
Determines whether a whitespace was found after the identifier DELETE. |
boolean |
hasSpaceAfterFrom()
Determines whether a whitespace was found after the identifier FROM. |
protected void |
parse(WordParser wordParser,
boolean tolerant)
Parses the query by starting at the current position, which is part of the given WordParser. |
protected void |
toParsedText(java.lang.StringBuilder writer,
boolean actual)
Generates a string representation of this Expression, including its children,
if it has any. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
|---|
public DeleteClause(AbstractExpression parent)
DeleteClause.
parent - The parent of this expression| Method Detail |
|---|
public void accept(ExpressionVisitor visitor)
Expression by the given visitor.
visitor - The ExpressionVisitor to visit this objectpublic void acceptChildren(ExpressionVisitor visitor)
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.
visitor - The visitor to visit the children of this object.protected void addChildrenTo(java.util.Collection<Expression> children)
AbstractExpression to the given collection.
addChildrenTo in class AbstractExpressionchildren - The collection used to store the childrenprotected void addOrderedChildrenTo(java.util.List<Expression> children)
AbstractExpression to the given list.
addOrderedChildrenTo in class AbstractExpressionchildren - The list used to store the string representation of this AbstractExpressionpublic java.lang.String getActualDeleteIdentifier()
public java.lang.String getActualFromIdentifier()
public JPQLQueryBNF getQueryBNF()
Expression.
JPQLQueryBNF, which represents the grammar of this Expressionpublic Expression getRangeVariableDeclaration()
Expression representing the range variable declaration.
public boolean hasFrom()
true if FROM was parsed; false otherwisepublic boolean hasRangeVariableDeclaration()
true if the range variable declaration was parsed; false
otherwisepublic boolean hasSpaceAfterDelete()
true if there was a whitespace after the identifier DELETE;
false otherwisepublic boolean hasSpaceAfterFrom()
true if there was a whitespace after the identifier FROM;
false otherwiseprotected void parse(WordParser wordParser, boolean tolerant)
WordParser.
parse in class AbstractExpressionwordParser - 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 queries
protected void toParsedText(java.lang.StringBuilder writer,
boolean actual)
Expression, including its children,
if it has any.
toParsedText in class AbstractExpressionwriter - The buffer used to append this Expression's string representationactual - Determines whether the string representation should represent what was parsed,
i.e. include any "virtual" whitespace (such as ending whitespace) and the actual case of the
JPQL identifiers
|
EclipseLink 2.4.1, build 'v20121003-ad44345' API Reference | ||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | ||||||||