org.lsst.ccs.bus

Class KeyData

java.lang.Object

org.lsst.ccs.bus.KeyData

All Implemented Interfaces:

Serializable

public class KeyData
extends Object
implements Serializable

A key-value pair. The value can be a specific CodedData that codes data that is not of a "well known type".

Author:

bamade

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	KeyData.CodedData the value of data can be of a "well known type" (known to everybody) and so is coded directly otherwise it is encoded in a CodedData object.

Constructor Summary

Constructors

Constructor and Description
KeyData(String key, Object data)

Method Summary

Methods

Modifier and Type	Method and Description
List<KeyData>	getContentAsList() returns a list of key-values that can be directly used byt a trending database: each key (the name of fields in a composite object) is prepended with the actual key of this object (if overall key is "position" you may get something like "position.x" and "position.y" as keys in the list)
List<KeyData>	getContentAsRawList()
org.lsst.ccs.utilities.beanutils.Optional<byte[]>	getCrystallizedData() Big objects can be kept in database as Blobs.
String	getKey()
Object	getRawValue()
String	getUpdatedKey(String globalName)
org.lsst.ccs.utilities.beanutils.Optional<Object>	getValue() returns the value of the contained object if its class is accessible to the current ClassLoader.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyData

public KeyData(String key,
       Object data)

Method Detail

getKey

public String getKey()

getContentAsRawList

public List<KeyData> getContentAsRawList()

getContentAsList

public List<KeyData> getContentAsList()

returns a list of key-values that can be directly used byt a trending database: each key (the name of fields in a composite object) is prepended with the actual key of this object (if overall key is "position" you may get something like "position.x" and "position.y" as keys in the list)

Returns:

getValue

public org.lsst.ccs.utilities.beanutils.Optional<Object> getValue()

returns the value of the contained object if its class is accessible to the current ClassLoader. Otherwise the Optional object is empty.

Returns:

getCrystallizedData

public org.lsst.ccs.utilities.beanutils.Optional<byte[]> getCrystallizedData()

Big objects can be kept in database as Blobs. Objects that are Serializable but not decomposable (in key-value list) are stored in a byte array.

Returns:

getUpdatedKey

public String getUpdatedKey(String globalName)

getRawValue

public Object getRawValue()

toString

public String toString()

Overrides:

toString in class Object