public final class CaseExpression extends AbstractExpression
general_case_expression ::= CASE when_clause {when_clause}* ELSE scalar_expression END
or
simple_case_expression ::= CASE case_operand simple_when_clause {simple_when_clause}* ELSE scalar_expression END
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 . |
Expression |
getCaseOperand()
Returns the
Expression that represents the CASE operand. |
AbstractExpression |
getElseExpression()
Returns the
Expression that represents the ELSE operand. |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this
Expression . |
AbstractExpression |
getWhenClauses()
Returns the
Expression that represents the WHEN clauses. |
boolean |
hasCaseOperand()
Determines whether the CASE operand was parsed.
|
boolean |
hasElse()
Determines whether the identifier ELSE was parsed.
|
boolean |
hasElseExpression()
Determines whether the ELSE expression was parsed.
|
boolean |
hasEnd()
Determines whether the identifier END was parsed.
|
boolean |
hasSpaceAfterCase()
Determines whether a whitespace was parsed after CASE.
|
boolean |
hasSpaceAfterCaseOperand()
Determines whether a whitespace was parsed after the case operand.
|
boolean |
hasSpaceAfterElse()
Determines whether a whitespace was parsed after ELSE.
|
boolean |
hasSpaceAfterElseExpression()
Determines whether a whitespace was parsed after the else expression.
|
boolean |
hasSpaceAfterWhenClauses()
Determines whether a whitespace was parsed after the WHEN clause.
|
boolean |
hasWhenClauses()
Determines whether the WHEN clauses were parsed.
|
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 Expression getCaseOperand()
Expression
that represents the CASE operand.public AbstractExpression getElseExpression()
Expression
that represents the ELSE operand.public JPQLQueryBNF getQueryBNF()
Expression
.getQueryBNF
in class AbstractExpression
JPQLQueryBNF
, which represents the grammar of this Expression
public AbstractExpression getWhenClauses()
Expression
that represents the WHEN clauses.public boolean hasCaseOperand()
true
if the CASE operand was parsed; false
otherwisepublic boolean hasElse()
true
if the identifier ELSE was parsed; false
otherwisepublic boolean hasElseExpression()
true
if the ELSE expression was parsed; false
otherwisepublic boolean hasEnd()
true
if the identifier END was parsed; false
otherwisepublic boolean hasSpaceAfterCase()
true
if there was a whitespace after CASE; false
otherwisepublic boolean hasSpaceAfterCaseOperand()
true
if there was a whitespace after the case operand; false
otherwisepublic boolean hasSpaceAfterElse()
true
if there was a whitespace after ELSE; false
otherwisepublic boolean hasSpaceAfterElseExpression()
true
if there was a whitespace after the else expression;
false
otherwisepublic boolean hasSpaceAfterWhenClauses()
true
if there was a whitespace after false
otherwisepublic boolean hasWhenClauses()
true
if the WHEN clauses were parsed;
false
otherwiseEclipseLink 2.3.2, "build v20111125-r10461" API Reference