org.gridlab.gat.advert
Class MetaData

java.lang.Object
  org.gridlab.gat.advert.MetaData

All Implemented Interfaces:

Serializable

public class MetaData
extends Object
implements Serializable

This class describes meta data that can be attached to an Advertisable object. MetaData consists of a number of key value tuples, where both the keys and the values are strings.

Author:

rob

See Also:

Serialized Form

Constructor Summary

MetaData()

Method Summary

String	get(String key) Gets the value associated to the provided key.
String	getData(int i) Gets the value associated to the key retrieved by getKey(i).
String	getKey(int i) Gets the i-th key of the MetaData.
boolean	match(MetaData query) Match two MetaData objects.
void	put(String key, String value) Put an entry in the MetaData object.
String	remove(String key) Removes an entry specified by the provided key.
int	size() Returns the number of entries in the MetaData.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MetaData

public MetaData()

Method Detail

put

public void put(String key,
                String value)

Put an entry in the MetaData object.

Parameters:

key - the key that corresponds to the given value

value - the value that corresponds to the given key

get

public String get(String key)

Gets the value associated to the provided key.

Parameters:

key - the key for which the associated value should be retrieved

Returns:

the associated value

remove

public String remove(String key)

Removes an entry specified by the provided key.

Parameters:

key - the key for which the entry should be removed

Returns:

the associated value of the provided key

getKey

public String getKey(int i)

Gets the i-th key of the MetaData.

Parameters:

i - the position of the key

Returns:

the key at position i

getData

public String getData(int i)

Gets the value associated to the key retrieved by getKey(i).

Parameters:

i - the position of the value

Returns:

the value associated with the key at position i

size

public int size()

Returns the number of entries in the MetaData.

Returns:

the number of entries in the MetaData

match

public boolean match(MetaData query)

Match two MetaData objects. Used internally by the GAT. GAT users should not call this method.

Parameters:

query - the MetaData object to compare to.

Returns:

true: the two objects match. false: otherwise.