public final class UnionClause extends AbstractExpression
union_clause ::= { UNION | INTERSECT | EXCEPT } [ALL] subquery
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, AS_OF, ASC, AVG, BETWEEN, BIT_LENGTH, BOTH, CASE, CAST, CHAR_LENGTH, CHARACTER_LENGTH, CLASS, COALESCE, COLUMN, CONCAT, CONNECT_BY, COUNT, CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP, DELETE, DELETE_FROM, DESC, DIFFERENT, DISTINCT, DIVISION, ELSE, EMPTY, END, ENTRY, EQUAL, ESCAPE, EXCEPT, EXISTS, EXTRACT, FALSE, FETCH, FIRST, FROM, FUNC, FUNCTION, GREATER_THAN, GREATER_THAN_OR_EQUAL, GROUP_BY, HAVING, IN, INDEX, INNER, INNER_JOIN, INNER_JOIN_FETCH, INTERSECT, IS, IS_EMPTY, IS_NOT_EMPTY, IS_NOT_NULL, IS_NULL, JOIN, JOIN_FETCH, KEY, LAST, 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_EQUAL, NOT_EXISTS, NOT_IN, NOT_LIKE, NOT_MEMBER, NOT_MEMBER_OF, NULL, NULLIF, NULLS, NULLS_FIRST, NULLS_LAST, OBJECT, OF, ON, OPERATOR, OR, ORDER_BY, ORDER_SIBLINGS_BY, OUTER, PLUS, POSITION, POSITIONAL_PARAMETER, QUOTE, REGEXP, SCN, SELECT, SET, SIZE, SOME, SQL, SQRT, START_WITH, SUBSTRING, SUM, TABLE, THEN, TIMESTAMP, TRAILING, TREAT, TRIM, TRUE, TYPE, UNION, UNKNOWN, UPDATE, UPPER, VALUE, WHEN, WHERE
Constructor and Description |
---|
UnionClause(AbstractExpression parent,
java.lang.String identifier)
Creates a new
UnionClause . |
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 |
findQueryBNF(Expression expression)
Retrieves the
JPQLQueryBNF that represents the fragment of this Expression
that was used when parsing the given Expression . |
java.lang.String |
getActualAll()
Returns the actual
ALL found in the string representation of the JPQL
query, which has the actual case that was used. |
java.lang.String |
getActualIdentifier()
Returns the actual identifier found in the string representation of the JPQL query, which
has the actual case that was used.
|
java.lang.String |
getIdentifier()
Returns the union identifier.
|
Expression |
getQuery()
Returns the
Expression representing the unioned query. |
JPQLQueryBNF |
getQueryBNF()
Returns the BNF of this
Expression . |
boolean |
hasAll()
Determines whether
ALL was parsed. |
boolean |
hasQuery()
Determines whether the query was parsed.
|
boolean |
hasSpaceAfterAll()
Determines whether a whitespace was parsed after
ALL . |
boolean |
hasSpaceAfterIdentifier()
Determines whether a whitespace was parsed after the identifier.
|
boolean |
isExcept()
Determines whether this
UnionClause uses the EXCEPT identifier. |
boolean |
isIntersect()
Determines whether this
UnionClause uses the INTERSECT identifier. |
boolean |
isUnion()
Determines whether this
UnionClause uses the UNION identifier. |
children, getGrammar, getIdentifierVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, isAncestor, orderedChildren, populatePosition, toActualText, toParsedText, toString
public UnionClause(AbstractExpression parent, java.lang.String identifier)
UnionClause
.parent
- The parent of this expressionidentifier
- Either UNION
, INTERSECT
or
EXCEPT
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.public JPQLQueryBNF findQueryBNF(Expression expression)
JPQLQueryBNF
that represents the fragment of this Expression
that was used when parsing the given Expression
.findQueryBNF
in interface Expression
findQueryBNF
in class AbstractExpression
expression
- The Expression
that is a descendant of this oneJPQLQueryBNF
that was used to parse the given expressionpublic java.lang.String getActualAll()
ALL
found in the string representation of the JPQL
query, which has the actual case that was used.ALL
identifier that was actually parsedpublic java.lang.String getActualIdentifier()
public java.lang.String getIdentifier()
public Expression getQuery()
Expression
representing the unioned query.Expression
representing the subquerypublic JPQLQueryBNF getQueryBNF()
Expression
.JPQLQueryBNF
, which represents the grammar of this Expression
public boolean hasAll()
ALL
was parsed.true
if ALL
was parsed; false
otherwisepublic boolean hasQuery()
true
the query was parsed; false
otherwisepublic boolean hasSpaceAfterAll()
ALL
.true
if a whitespace was parsed after ALL
;
false
otherwisepublic boolean hasSpaceAfterIdentifier()
true
if a whitespace was parsed after the identifier; false
otherwisepublic boolean isExcept()
UnionClause
uses the EXCEPT
identifier.true
if the identifier is EXCEPT
; false
otherwisepublic boolean isIntersect()
UnionClause
uses the INTERSECT
identifier.true
if the identifier is INTERSECT
; false
otherwisepublic boolean isUnion()
UnionClause
uses the UNION
identifier.true
if the identifier is UNION
; false
otherwiseEclipseLink 2.6.3, "build v20160428-59c81c5" API Reference