public final class ResultVariable extends AbstractExpression
select_item ::= select_expression [[AS] result_variable]
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 . |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this
Expression . |
Expression |
getResultVariable()
Returns the
Expression representing the result variable. |
Expression |
getSelectExpression()
Returns the
Expression representing the select expression. |
boolean |
hasAs()
Determines whether the identifier AS was parsed or not.
|
boolean |
hasResultVariable()
Determines whether the result variable was parsed.
|
boolean |
hasSelectExpression()
Determines whether a select expression was defined for this result variable.
|
boolean |
hasSpaceAfterAs()
Determines whether a whitespace was parsed after the identifier AS.
|
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 JPQLQueryBNF getQueryBNF()
Expression
.getQueryBNF
in class AbstractExpression
JPQLQueryBNF
, which represents the grammar of this Expression
public Expression getResultVariable()
Expression
representing the result variable.public Expression getSelectExpression()
Expression
representing the select expression.public boolean hasAs()
true
if the identifier AS was parsed; false
otherwisepublic boolean hasResultVariable()
true
if the result variable was parsed; false
otherwisepublic boolean hasSelectExpression()
true
if the select expression was parsed; false
if the
result variable was parsed without onepublic boolean hasSpaceAfterAs()
true
if there was a whitespace after AS; false
otherwiseEclipseLink 2.3.2, "build v20111125-r10461" API Reference