org.datanucleus.query.expression
Class ParameterExpression

java.lang.Object
  org.datanucleus.query.expression.Expression
      org.datanucleus.query.expression.ParameterExpression

public class ParameterExpression
extends Expression

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

ParameterExpression(java.lang.String name, java.lang.Class type)
Constructor for when we know the name and the type (e.g via criteria queries).

ParameterExpression(java.lang.String name, int position)

Method Summary

Symbol	bind(SymbolTable symtbl) Method to bind the expression to the symbol table as appropriate.
java.lang.String	getId()
int	getPosition()
java.lang.Class	getType()
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

ParameterExpression

public ParameterExpression(java.lang.String name,
                           int position)

ParameterExpression

public ParameterExpression(java.lang.String name,
                           java.lang.Class type)

Constructor for when we know the name and the type (e.g via criteria queries).

Parameters:

name - The name

type - The type

Method Detail

getId

public java.lang.String getId()

getPosition

public int getPosition()

getType

public java.lang.Class getType()

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