org.persvr.datasource
Class LocalJsonFileSource

java.lang.Object
  org.persvr.remote.JsonReceiver
      org.persvr.datasource.AbstractJsonSource
          org.persvr.datasource.LocalJsonFileSource

All Implemented Interfaces:

ChangeableData, DataSource, ListDataSource, WritableDataSource, PersevereFilter.LocalDataSource

public class LocalJsonFileSource
extends AbstractJsonSource
implements PersevereFilter.LocalDataSource, WritableDataSource, ChangeableData

Nested Class Summary

Nested classes/interfaces inherited from class org.persvr.datasource.AbstractJsonSource

AbstractJsonSource.RootAndResolved

Nested classes/interfaces inherited from class org.persvr.remote.JsonReceiver

JsonReceiver.UpdateInfo

Field Summary

static java.lang.String	LOCAL_JSPON_RELATIVE_PATH
protected java.lang.String	localPath
static java.lang.String	pathSeparator

Fields inherited from class org.persvr.datasource.AbstractJsonSource

defaultCacheLength

Fields inherited from class org.persvr.remote.JsonReceiver

FUNCTION_CODE_KEY, NOT_READY_FIELD, path

Constructor Summary

LocalJsonFileSource()

Method Summary

boolean	doesObjectNeedUpdating(java.lang.String objectId) This indicates how long an object can be accessed by id before an id request should go back to the data source for an update.
java.lang.Object	getFieldValue(LazyPropertyId valueId) This is called when a field value contains an unfulfilled value (ValueId)
protected java.lang.Object	getJson(java.lang.String resourceName) Gets the JSON string for a particular object id.
java.lang.String	getPathSeparator()
protected ObjectId	idFromJSPONObject(java.util.Map object, ObjectId defaultId)
void	initParameters(java.util.Map<java.lang.String,java.lang.Object> parameters) This is called on initialization and provides access to the data source configuration parameters
protected void	mapJson(PersistableInitializer initializer, java.lang.Object object, java.lang.String objectId)
java.util.Iterator	mapQuery(Query query) This is called when an object is being activated to retrieve the persisted data for a given object with a filter
protected void	newJson(java.lang.String json)
boolean	passThrough()
void	recordDelete(java.lang.String objectId) This is called when an object should be deleted
NewObjectPersister	recordNewObject(Persistable object) This is called when a new object is persisted
protected void	setJson(java.lang.String resourceName, java.lang.String json)
static void	setLocalJsonPath(java.lang.String localJsonPath)

Methods inherited from class org.persvr.datasource.AbstractJsonSource

abortTransaction, commitTransaction, convertJsonToJavaScript, getId, getMap, getResourceAsString, handleNewObject, hiddenId, makeDirty, mapObject, mapSchema, recordList, recordPropertyAddition, recordPropertyChange, recordPropertyRemoval, serialize, setId, startTransaction

Methods inherited from class org.persvr.remote.JsonReceiver

convertJsponStringToObject, convertParsedToObject, createInitialObject, getPath, handleRPC, idOrValueFromJSON, listFromJSPONArray, parseJsponString, replaceList, setPath

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.persvr.datasource.WritableDataSource

abortTransaction, commitTransaction, recordPropertyAddition, recordPropertyChange, recordPropertyRemoval, startTransaction

Methods inherited from interface org.persvr.datasource.DataSource

getId, hiddenId, mapObject, setId

Field Detail

LOCAL_JSPON_RELATIVE_PATH

public static final java.lang.String LOCAL_JSPON_RELATIVE_PATH

See Also:

Constant Field Values

localPath

protected java.lang.String localPath

pathSeparator

public static final java.lang.String pathSeparator

See Also:

Constant Field Values

Constructor Detail

LocalJsonFileSource

public LocalJsonFileSource()

Method Detail

doesObjectNeedUpdating

public boolean doesObjectNeedUpdating(java.lang.String objectId)

Description copied from interface: ChangeableData

This indicates how long an object can be accessed by id before an id request should go back to the data source for an update.

Specified by:

doesObjectNeedUpdating in interface ChangeableData

Returns:

recordDelete

public void recordDelete(java.lang.String objectId)
                  throws java.lang.Exception

Description copied from interface: WritableDataSource

This is called when an object should be deleted

Specified by:

recordDelete in interface WritableDataSource

Throws:

java.lang.Exception

recordNewObject

public NewObjectPersister recordNewObject(Persistable object)
                                   throws java.lang.Exception

Description copied from interface: WritableDataSource

This is called when a new object is persisted

Specified by:

recordNewObject in interface WritableDataSource

Overrides:

recordNewObject in class AbstractJsonSource

Returns:

persister

Throws:

java.lang.Exception

setLocalJsonPath

public static void setLocalJsonPath(java.lang.String localJsonPath)

getJson

protected java.lang.Object getJson(java.lang.String resourceName)
                            throws java.lang.Exception

Description copied from class: AbstractJsonSource

Gets the JSON string for a particular object id. This is called when an object needs to be initialized, and this AbstractJsonSource/JsonReceiver will handle the conversion of the JSON string to an object

Specified by:

getJson in class AbstractJsonSource

Returns:

the JSON string

Throws:

java.lang.Exception

setJson

protected void setJson(java.lang.String resourceName,
                       java.lang.String json)
                throws java.lang.Exception

Specified by:

setJson in class AbstractJsonSource

Throws:

java.lang.Exception

getPathSeparator

public java.lang.String getPathSeparator()

Overrides:

getPathSeparator in class AbstractJsonSource

mapJson

protected void mapJson(PersistableInitializer initializer,
                       java.lang.Object object,
                       java.lang.String objectId)

Overrides:

mapJson in class AbstractJsonSource

idFromJSPONObject

protected ObjectId idFromJSPONObject(java.util.Map object,
                                     ObjectId defaultId)

Specified by:

idFromJSPONObject in class JsonReceiver

getFieldValue

public java.lang.Object getFieldValue(LazyPropertyId valueId)
                               throws java.lang.Exception

Description copied from interface: DataSource

This is called when a field value contains an unfulfilled value (ValueId)

Specified by:

getFieldValue in interface DataSource

Returns:

the real value referred to by valueId

Throws:

java.lang.Exception

initParameters

public void initParameters(java.util.Map<java.lang.String,java.lang.Object> parameters)

Description copied from interface: DataSource

This is called on initialization and provides access to the data source configuration parameters

Specified by:

initParameters in interface DataSource

passThrough

public boolean passThrough()

Specified by:

passThrough in interface PersevereFilter.LocalDataSource

mapQuery

public java.util.Iterator mapQuery(Query query)
                            throws java.lang.Exception

Description copied from interface: DataSource

This is called when an object is being activated to retrieve the persisted data for a given object with a filter

Specified by:

mapQuery in interface DataSource

Returns:

Throws:

java.lang.Exception

newJson

protected void newJson(java.lang.String json)
                throws java.lang.Exception

Specified by:

newJson in class AbstractJsonSource

Throws:

java.lang.Exception