galileo.query

Class Expression

java.lang.Object

galileo.query.Expression

All Implemented Interfaces:

galileo.serialization.ByteSerializable

public class Expression
extends java.lang.Object
implements galileo.serialization.ByteSerializable

Representation of a query expression. For example: x != 3.6. Contains an operator, and an associated value.

Author:

malensek

Nested Class Summary

Nested classes/interfaces inherited from interface galileo.serialization.ByteSerializable

galileo.serialization.ByteSerializable.Deserialize

Constructor Summary

Constructors

Constructor and Description
Expression(Operator operator, Feature value)
Expression(galileo.serialization.SerializationInputStream in)
Expression(java.lang.String operator, Feature value)

Method Summary

Modifier and Type	Method and Description
java.lang.String	getOperand()
Operator	getOperator()
Feature	getValue()
void	serialize(galileo.serialization.SerializationOutputStream out)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Expression

public Expression(Operator operator,
                  Feature value)

Expression

public Expression(java.lang.String operator,
                  Feature value)

Expression

@ByteSerializable.Deserialize
public Expression(galileo.serialization.SerializationInputStream in)
                                         throws java.io.IOException,
                                                galileo.serialization.SerializationException

Throws:

java.io.IOException

galileo.serialization.SerializationException

Method Detail

getValue

public Feature getValue()

getOperator

public Operator getOperator()

getOperand

public java.lang.String getOperand()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

serialize

public void serialize(galileo.serialization.SerializationOutputStream out)
               throws java.io.IOException

Specified by:

serialize in interface galileo.serialization.ByteSerializable

Throws:

java.io.IOException