Class DatabaseType
- java.lang.Object
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- org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
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- org.eclipse.persistence.jpa.jpql.parser.AbstractEncapsulatedExpression
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- org.eclipse.persistence.jpa.jpql.parser.AbstractDoubleEncapsulatedExpression
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- org.eclipse.persistence.jpa.jpql.parser.DatabaseType
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- All Implemented Interfaces:
Expression
public final class DatabaseType extends AbstractDoubleEncapsulatedExpression
This expression represents the database specific data type, which may include size and scale.BNF:database_type ::= data_type_literal [( [numeric_literal [, numeric_literal]] )]
BNF:data_type_literal ::= [CHAR, VARCHAR, NUMERIC, INTEGER, DATE, TIME, TIMESTAMP, etc]
Example:
CASE(e.name AS VARCHAR(20))
- Since:
- 2.4
- Version:
- 2.5
- Author:
- Pascal Filion
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Field Summary
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Fields inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
COMMA, DOT, DOUBLE_QUOTE, LEFT_CURLY_BRACKET, LEFT_PARENTHESIS, NOT_DEFINED, RIGHT_CURLY_BRACKET, RIGHT_PARENTHESIS, SINGLE_QUOTE, SPACE, UNDERSCORE
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Fields inherited from interface org.eclipse.persistence.jpa.jpql.parser.Expression
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
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Constructor Summary
Constructors Constructor Description DatabaseType(AbstractExpression parent, java.lang.String databaseType)
Creates a newDatabaseType
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
accept(ExpressionVisitor visitor)
Visits thisExpression
by the givenvisitor
.JPQLQueryBNF
getQueryBNF()
Returns the BNF of thisExpression
.java.lang.String
parameterExpressionBNF(int index)
Returns the BNF to be used to parse one of the encapsulated expression.-
Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractDoubleEncapsulatedExpression
acceptChildren, buildCollectionExpression, findQueryBNF, getFirstExpression, getSecondExpression, hasComma, hasEncapsulatedExpression, hasFirstExpression, hasSecondExpression, hasSpaceAfterComma
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Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractEncapsulatedExpression
getActualIdentifier, getIdentifier, hasLeftParenthesis, hasRightParenthesis, hasSpaceAfterIdentifier
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Methods inherited from class org.eclipse.persistence.jpa.jpql.parser.AbstractExpression
children, getGrammar, getIdentifierVersion, getLength, getOffset, getParent, getQueryBNF, getRoot, isAncestor, orderedChildren, populatePosition, toActualText, toParsedText, toString
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Constructor Detail
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DatabaseType
public DatabaseType(AbstractExpression parent, java.lang.String databaseType)
Creates a newDatabaseType
.- Parameters:
parent
- The parent of this expressiondatabaseType
- The database type
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Method Detail
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accept
public void accept(ExpressionVisitor visitor)
Visits thisExpression
by the givenvisitor
.- Parameters:
visitor
- TheExpressionVisitor
to visit this object
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getQueryBNF
public JPQLQueryBNF getQueryBNF()
Returns the BNF of thisExpression
.- Returns:
- The
JPQLQueryBNF
, which represents the grammar of thisExpression
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parameterExpressionBNF
public java.lang.String parameterExpressionBNF(int index)
Returns the BNF to be used to parse one of the encapsulated expression.- Specified by:
parameterExpressionBNF
in classAbstractDoubleEncapsulatedExpression
- Parameters:
index
- The position of the encapsulatedExpression
that needs to be parsed within the parenthesis, which starts at position 0- Returns:
- The BNF to be used to parse one of the encapsulated expression
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