org.datanucleus.query.expression

Class VariableExpression

java.lang.Object

org.datanucleus.query.expression.Expression

org.datanucleus.query.expression.VariableExpression

All Implemented Interfaces:

Serializable

public class VariableExpression
extends Expression

Expression representing a variable. The variable can be explicit (declared as input to the query) or implicit (implied based on the query).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.query.expression.Expression

Expression.DyadicOperator, Expression.MonadicOperator, Expression.Operator

Field Summary

Fields inherited from class org.datanucleus.query.expression.Expression

alias, left, LOCALISER, op, OP_ADD, OP_AND, 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

Constructor Summary

Constructors

Constructor and Description
VariableExpression(String name)
VariableExpression(String name, Class type)

Method Summary

Methods

Modifier and Type	Method and Description
Symbol	bind(SymbolTable symtbl) Method to bind the expression to the symbol table as appropriate.
String	getId()
String	toString()

Methods inherited from class org.datanucleus.query.expression.Expression

evaluate, getAlias, getLeft, getOperator, getParent, getRight, getSymbol, setAlias, setLeft, setRight

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

VariableExpression

public VariableExpression(String name)

VariableExpression

public VariableExpression(String name,
                  Class type)

Method Detail

getId

public String getId()

bind

public Symbol bind(SymbolTable symtbl)

Method to bind the expression to the symbol table as appropriate.

Specified by:

bind in class Expression

Parameters:

symtbl - Symbol table

Returns:

The symbol for this expression

toString

public String toString()

Overrides:

toString in class Object