- java.lang.Object
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- org.datanucleus.store.query.expression.Expression
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- org.datanucleus.store.query.expression.SubqueryExpression
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- All Implemented Interfaces:
Serializable
public class SubqueryExpression extends Expression
Expression containing a subquery. A subquery is formed from a keyword and a variable expression representing the subquery, so something likeKEYWORD(subquery)
e.gEXISTS (SELECT 1 FROM MYTABLE WHERE MYID = 4)
- See Also:
- Serialized Form
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Nested Class Summary
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Nested classes/interfaces inherited from class org.datanucleus.store.query.expression.Expression
Expression.DyadicOperator, Expression.MonadicOperator, Expression.Operator
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Field Summary
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Fields inherited from class org.datanucleus.store.query.expression.Expression
alias, left, op, OP_ADD, OP_AND, OP_BIT_AND, OP_BIT_OR, OP_BIT_XOR, OP_CAST, OP_COM, OP_CONCAT, OP_DISTINCT, OP_DIV, OP_EQ, OP_GT, OP_GTEQ, OP_IN, OP_IS, OP_ISNOT, OP_LIKE, OP_LT, OP_LTEQ, OP_MOD, OP_MUL, OP_NEG, OP_NOT, OP_NOTEQ, OP_NOTIN, OP_OR, OP_SUB, parent, right, symbol
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Constructor Summary
Constructors Constructor Description SubqueryExpression(String keyword, VariableExpression operand)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Symbol
bind(SymbolTable symtbl)
Method to bind the expression to the symbol table as appropriate.String
getKeyword()
String
toString()
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Constructor Detail
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SubqueryExpression
public SubqueryExpression(String keyword, VariableExpression operand)
- Parameters:
keyword
- The keyword on the subqueryoperand
- The variable expression representing the subquery
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Method Detail
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bind
public Symbol bind(SymbolTable symtbl)
Description copied from class:Expression
Method to bind the expression to the symbol table as appropriate.- Specified by:
bind
in classExpression
- Parameters:
symtbl
- Symbol table- Returns:
- The symbol for this expression
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getKeyword
public String getKeyword()
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