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, UNDERSCOREABS, 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. |
protected void |
addChildrenTo(java.util.Collection<Expression> children)
Adds the children of this
AbstractExpression to the given collection. |
protected void |
addOrderedChildrenTo(java.util.List<Expression> children)
Adds the children of this
AbstractExpression to the given list. |
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. |
protected boolean |
isParsingComplete(WordParser wordParser,
java.lang.String word,
Expression expression)
Determines whether the parsing is complete based on what is left in the given text.
|
boolean |
isUnion()
Determines whether this
UnionClause uses the UNION identifier. |
protected void |
parse(WordParser wordParser,
boolean tolerant)
Parses the query by starting at the current position, which is part of the given
WordParser. |
protected java.lang.String |
parseIdentifier()
Parses the JPQL identifier identifier the type of union.
|
protected void |
toParsedText(java.lang.StringBuilder writer,
boolean actual)
Generates a string representation of this
Expression, including its children,
if it has any. |
acceptUnknownVisitor, acceptUnknownVisitor, buildExpressionFromFallingBack, buildNullExpression, buildStringExpression, buildStringExpression, buildUnknownExpression, calculatePosition, children, findFallBackExpressionFactory, getExpressionFactory, getExpressionRegistry, getGrammar, getIdentifierVersion, getJPAVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, getText, handleAggregate, handleCollection, isAncestor, isIdentifier, isNull, isTolerant, isUnknown, isVirtual, orderedChildren, parse, parseUsingExpressionFactory, populatePosition, rebuildActualText, rebuildParsedText, setParent, setText, shouldParseWithFactoryFirst, shouldSkipLiteral, toActualText, toParsedText, toStringpublic UnionClause(AbstractExpression parent, java.lang.String identifier)
UnionClause.parent - The parent of this expressionidentifier - Either UNION, INTERSECT or
EXCEPTpublic 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.protected void addChildrenTo(java.util.Collection<Expression> children)
AbstractExpression to the given collection.addChildrenTo in class AbstractExpressionchildren - The collection used to store the childrenprotected void addOrderedChildrenTo(java.util.List<Expression> children)
AbstractExpression to the given list.addOrderedChildrenTo in class AbstractExpressionchildren - The list used to store the string representation of this AbstractExpressionpublic JPQLQueryBNF findQueryBNF(Expression expression)
JPQLQueryBNF that represents the fragment of this Expression
that was used when parsing the given Expression.findQueryBNF in interface ExpressionfindQueryBNF in class AbstractExpressionexpression - 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 Expressionpublic 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 otherwiseprotected boolean isParsingComplete(WordParser wordParser, java.lang.String word, Expression expression)
isParsingComplete in class AbstractExpressionwordParser - The text to parse based on the current position of the cursorword - The word that was retrieved from the given text, which is the first word in the textexpression - The Expression that has already been parsedtrue if the text no longer can't be parsed by the current expression;
false if more can be parsedpublic boolean isUnion()
UnionClause uses the UNION identifier.true if the identifier is UNION; false otherwiseprotected void parse(WordParser wordParser, boolean tolerant)
WordParser.parse in class AbstractExpressionwordParser - 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 queriesprotected java.lang.String parseIdentifier()
protected void toParsedText(java.lang.StringBuilder writer,
boolean actual)
Expression, including its children,
if it has any.toParsedText in class AbstractExpressionwriter - The buffer used to append this Expression's string representationactual - Determines whether the string representation should represent what was parsed,
i.e. include any "virtual" whitespace (such as ending whitespace) and the actual case of the
JPQL identifiers