public final class JoinFetch extends AbstractExpression
fetch_join ::= join_spec FETCH join_association_path_expression
COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE
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
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 . |
String |
getIdentifier()
Returns the identifier this expression represents.
|
Expression |
getJoinAssociationPath()
Returns the
Expression that represents the join association path expression if it was
parsed. |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this
Expression . |
boolean |
hasJoinAssociationPath()
Determines whether the join association path expression was parsed.
|
boolean |
hasSpaceAfterFetch()
Determines whether a whitespace was found after FETCH.
|
boolean |
isLeftJoinFetch()
Determines whether this
JoinFetch is a left join fetch, i.e. |
children, findQueryBNF, getChildren, getParent, getRoot, identifierRole, identifiers, identifierVersion, isAncestor, isIdentifier, isVirtual, orderedChildren, queryBNF, toActualText, toParsedText, toString
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.public String getIdentifier()
public Expression getJoinAssociationPath()
Expression
that represents the join association path expression if it was
parsed.public JPQLQueryBNF getQueryBNF()
Expression
.getQueryBNF
in class AbstractExpression
JPQLQueryBNF
, which represents the grammar of this Expression
public boolean hasJoinAssociationPath()
true
if the join association path expression was parsed; false
otherwisepublic boolean hasSpaceAfterFetch()
true
if there was a whitespace after FETCH; false
otherwisepublic boolean isLeftJoinFetch()
JoinFetch
is a left join fetch, i.e. Expression.LEFT_JOIN_FETCH
or Expression.LEFT_OUTER_JOIN_FETCH
.true
if this JoinFetch
expression is a Expression.LEFT_JOIN_FETCH
or Expression.LEFT_OUTER_JOIN_FETCH
; false
otherwiseEclipseLink 2.3.2, "build v20111125-r10461" API Reference