com.ibm.websphere.query.base
Class Operator

java.lang.Object
  com.ibm.websphere.query.base.Operator

All Implemented Interfaces:

IOperator, IStringBuilder, java.io.Serializable

public class Operator
extends java.lang.Object
implements IOperator

The Operator class represents an operator in the query framework. It can be used in a predicate, an order by, and wherever appropriate.

This class contains a name, and a metadata that encapsulates information about mapping to a domain specific operator.

See Also:

Serialized Form

Constructor Summary

Operator()
Creates a new Operator instance, default constructor.

Operator(java.lang.String newName)
Creates a new Operator instance with the given name.

Operator(java.lang.String newName, java.lang.Object newMetadata)
Creates a new Operator instance with the given name, and metadata object.

Method Summary

java.lang.String	buildString(ISelectQueryCallback builder) Builds a query string for the operator.
void	buildString(ISelectQueryCallback builder, java.lang.StringBuffer sb)
boolean	equals(java.lang.Object o) Tests for equality with the given object.
java.lang.Object	getMetadata() Returns the metadata object, the domain specific object the operator is mapped to.
java.lang.String	getName() Returns the operator name.
int	hashCode() Computes a hash code for the operator.
void	setMetadata(java.lang.Object newMetadata) Sets the metadata object, the domain specific object the operator is mapped to.
void	setName(java.lang.String newName) Sets the operator name.
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Operator

public Operator()

Creates a new Operator instance, default constructor.

Operator

public Operator(java.lang.String newName)

Creates a new Operator instance with the given name.

Operator

public Operator(java.lang.String newName,
                java.lang.Object newMetadata)

Creates a new Operator instance with the given name, and metadata object.

Method Detail

getName

public java.lang.String getName()

Returns the operator name.

Specified by:

getName in interface IOperator

setName

public void setName(java.lang.String newName)

Sets the operator name.

buildString

public java.lang.String buildString(ISelectQueryCallback builder)
                             throws QueryException

Builds a query string for the operator.

Specified by:

buildString in interface IStringBuilder

Throws:

QueryException

buildString

public void buildString(ISelectQueryCallback builder,
                        java.lang.StringBuffer sb)
                 throws QueryException

Specified by:

buildString in interface IStringBuilder

Throws:

QueryException

equals

public boolean equals(java.lang.Object o)

Tests for equality with the given object.

Overrides:

equals in class java.lang.Object

getMetadata

public java.lang.Object getMetadata()

Returns the metadata object, the domain specific object the operator is mapped to.

hashCode

public int hashCode()

Computes a hash code for the operator.

Overrides:

hashCode in class java.lang.Object

setMetadata

public void setMetadata(java.lang.Object newMetadata)

Sets the metadata object, the domain specific object the operator is mapped to.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object