org.deegree.io.datastore.sql.transaction
Class UpdateHandler

java.lang.Object
  org.deegree.io.datastore.sql.AbstractRequestHandler
      org.deegree.io.datastore.sql.transaction.UpdateHandler

public class UpdateHandler
extends AbstractRequestHandler

Handler for Update operations (usually contained in Transaction requests).

Version:

$Revision: 7375 $, $Date: 2007-05-30 18:28:12 +0200 (Mi, 30 Mai 2007) $

Author:

Markus Schneider, last edited by: $Author: mschneider $

Field Summary

Fields inherited from class org.deegree.io.datastore.sql.AbstractRequestHandler

aliasGenerator, conn, datastore, FT_COLUMN, FT_PREFIX

Constructor Summary

UpdateHandler(SQLTransaction dsTa, TableAliasGenerator aliasGenerator, Connection conn, String lockId)
Creates a new UpdateHandler from the given parameters.

Method Summary

int	performUpdate(MappedFeatureType mappedFeatureType, Feature replacementFeature, Filter filter) Performs an update operation against the associated datastore.
int	performUpdate(MappedFeatureType ft, Map<PropertyPath,FeatureProperty> replacementProps, Filter filter) Performs an update operation against the associated datastore.

Methods inherited from class org.deegree.io.datastore.sql.AbstractRequestHandler

appendColumnsList, appendFeatureIdColumns, appendFeatureIdConstraint, appendFeatureIdConstraint, appendJoinCondition, appendJoins, appendQualifiedColumn, appendQualifiedColumnsList, determineAffectedAndModifiableFIDs, determineAffectedFIDs, determineSubFeatures, determineSuperFeatures, extractFeatureId, extractFeatureIds

Methods inherited from class java.lang.Object

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

Constructor Detail

UpdateHandler

public UpdateHandler(SQLTransaction dsTa,
                     TableAliasGenerator aliasGenerator,
                     Connection conn,
                     String lockId)

Creates a new UpdateHandler from the given parameters.

Parameters:

dsTa -

aliasGenerator -

conn -

lockId - optional id of associated lock (may be null)

Method Detail

performUpdate

public int performUpdate(MappedFeatureType ft,
                         Map<PropertyPath,FeatureProperty> replacementProps,
                         Filter filter)
                  throws DatastoreException

Performs an update operation against the associated datastore.

Parameters:

ft -

replacementProps -

filter -

Returns:

number of updated (root) feature instances

Throws:

DatastoreException

performUpdate

public int performUpdate(MappedFeatureType mappedFeatureType,
                         Feature replacementFeature,
                         Filter filter)
                  throws DatastoreException

Performs an update operation against the associated datastore.

The filter must match exactly one feature instance (or none) which is then replaced by the specified replacement feature.

Parameters:

mappedFeatureType -

replacementFeature -

filter -

Returns:

number of updated (root) feature instances (0 or 1)

Throws:

DatastoreException