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Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
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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.DeleteStatement
public final class DeleteStatement
Bulk delete operation apply to entities of a single entity class (together with its subclasses, if any).
delete_statement ::= delete_clause [where_clause]
Field Summary | |
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private DeleteClause |
deleteClause The 'DELETE' clause of this expression. |
private boolean |
hasSpace Determines whether a whitespace was parsed after the DELETE clause. |
private AbstractExpression |
whereClause The optional 'WHERE' clause of this expression. |
Fields inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression |
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COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE |
Constructor Summary | |
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DeleteStatement(AbstractExpression parent) Creates a new DeleteStatement . |
Method Summary | |
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void |
accept(ExpressionVisitor visitor) Visits this Expression by the given visitor . |
void |
acceptChildren(ExpressionVisitor visitor) Visits the children of this Expression . |
(package private) void |
addChildrenTo(java.util.Collection<Expression> children) Adds the children of this Expression to the given collection. |
(package private) DeleteClause |
addDeleteClause() Manually adds the delete clause to this delete statement. |
(package private) void |
addOrderedChildrenTo(java.util.List<StringExpression> children) Adds the StringExpressions representing this Expression . |
DeleteClause |
getDeleteClause() Returns the Expression representing the DELETE clause. |
JPQLQueryBNF |
getQueryBNF() Returns the BNF of this Expression . |
Expression |
getWhereClause() Returns the Expression representing the WHERE clause. |
boolean |
hasSpaceAfterDeleteClause() Determines whether a whitespace was found after the DELETE FROM clause. |
boolean |
hasWhereClause() Determines whether the WHERE clause is defined. |
(package private) void |
parse(WordParser wordParser, boolean tolerant) Parses the query by starting at the current position, which is part of the given WordParser . |
(package private) void |
toParsedText(java.lang.StringBuilder writer, boolean includeVirtual) Generates a string representation of this Expression . |
Methods inherited from class org.eclipse.persistence.jpa.internal.jpql.parser.AbstractExpression |
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buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, children, expressionFactory, expressionFactoryForIdentifier, findQueryBNF, getChildren, getJPAVersion, getParent, getRoot, getText, handleAggregate, identifierRole, identifiers, identifiers, identifierVersion, isAncestor, isIdentifier, isNull, isParsingComplete, isTolerant, isUnknown, isVirtual, orderedChildren, parse, parseSingleExpression, populatePosition, queryBNF, readdLeadingSpaces, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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private DeleteClause deleteClause
private boolean hasSpace
private AbstractExpression whereClause
Constructor Detail |
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DeleteStatement(AbstractExpression parent)
DeleteStatement
.
parent
- The parent of this expressionMethod Detail |
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public void accept(ExpressionVisitor visitor)
Expression
by the given visitor
.visitor
- The visitor
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()
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.
visitor
- The visitor
to visit the children of this object.void addChildrenTo(java.util.Collection<Expression> children)
Expression
to the given collection.addChildrenTo
in class AbstractExpression
children
- The collection used to store the childrenDeleteClause addDeleteClause()
void addOrderedChildrenTo(java.util.List<StringExpression> children)
StringExpressions
representing this Expression
.addOrderedChildrenTo
in class AbstractExpression
children
- The list used to store the string representation of this Expression
public DeleteClause getDeleteClause()
Expression
representing the DELETE clause.public JPQLQueryBNF getQueryBNF()
Expression
.getQueryBNF
in class AbstractExpression
JPQLQueryBNF
, which represents the grammar of this Expression
public Expression getWhereClause()
Expression
representing the WHERE clause.public boolean hasSpaceAfterDeleteClause()
true
if there was a whitespace after the DELETE FROM clause and owned by this expression; false
otherwisepublic boolean hasWhereClause()
true
if the query that got parsed had the WHERE clausevoid parse(WordParser wordParser, boolean tolerant)
WordParser
.parse
in class AbstractExpression
wordParser
- 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 queriesvoid toParsedText(java.lang.StringBuilder writer, boolean includeVirtual)
Expression
.toParsedText
in class AbstractExpression
writer
- The buffer used to append this Expression
's string representationincludeVirtual
- Determines whether to include any characters that are considered virtual, i.e. that was parsed when the query is incomplete and is needed for functionality like content assist
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