org.datanucleus.query.expression
Class VariableExpression

java.lang.Object
  extended by org.datanucleus.query.expression.Expression
      extended by org.datanucleus.query.expression.VariableExpression

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).


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
VariableExpression(java.lang.String name)
           
 
Method Summary
 Symbol bind(SymbolTable symtbl)
          Method to bind the expression to the symbol table as appropriate.
 java.lang.String getId()
           
 java.lang.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(java.lang.String name)
Method Detail

getId

public java.lang.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 java.lang.String toString()
Overrides:
toString in class java.lang.Object


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