org.deegree.io.datastore.sql.generic
Class GenericSQLTransaction

java.lang.Object
  org.deegree.io.datastore.sql.AbstractRequestHandler
      org.deegree.io.datastore.sql.transaction.SQLTransaction
          org.deegree.io.datastore.sql.generic.GenericSQLTransaction

All Implemented Interfaces:

DatastoreTransaction

public class GenericSQLTransaction
extends SQLTransaction

Special transaction implementation for the GenericSQLDatastore.

Please note that the quadtree management isn't finished yet.

What should work:

• inserting of new features
• deleting of features
• updating features (unless the geometry property is changed)

What definitely won't work:

• updating geometry properties will most probably break the index

Version:

$Revision: 9342 $, $Date: 2007-12-27 13:32:57 +0100 (Do, 27 Dez 2007) $

Author:

Andreas Poth, Markus Schneider, Rutger Bezema, last edited by: $Author: apoth $

See Also:

org.deegree.io.quadtree

Field Summary

static HashMap<String,String>

quadTreeVersionInfo saves versioninfos about the different quadtrees.

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

aliasGenerator, conn, datastore, FT_COLUMN, FT_PREFIX

Constructor Summary

GenericSQLTransaction(AbstractSQLDatastore ds, TableAliasGenerator aliasGenerator, Connection conn)

Method Summary

int	performDelete(MappedFeatureType mappedFeatureType, Filter filter, String lockId) Deletes the features from the datastore that are matched by the given filter and type.
List<FeatureId>	performInsert(List<Feature> features) Inserts the given feature instances into the datastore.
int	performUpdate(MappedFeatureType mappedFeatureType, Feature replacementFeature, Filter filter, String lockId) Performs an update operation against the datastore.
int	performUpdate(MappedFeatureType mappedFeatureType, Map<PropertyPath,FeatureProperty> replacementProps, Filter filter, String lockId) Performs an update operation against the datastore.

Methods inherited from class org.deegree.io.datastore.sql.transaction.SQLTransaction

commit, getConnection, getDatastore, performNative, release, rollback

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

Field Detail

quadTreeVersionInfo

public static HashMap<String,String> quadTreeVersionInfo

saves versioninfos about the different quadtrees.

Constructor Detail

GenericSQLTransaction

GenericSQLTransaction(AbstractSQLDatastore ds,
                      TableAliasGenerator aliasGenerator,
                      Connection conn)
                throws DatastoreException

Parameters:

ds -

aliasGenerator -

conn -

Throws:

DatastoreException

Method Detail

performDelete

public int performDelete(MappedFeatureType mappedFeatureType,
                         Filter filter,
                         String lockId)
                  throws DatastoreException

Description copied from class: SQLTransaction

Deletes the features from the datastore that are matched by the given filter and type.

Specified by:

performDelete in interface DatastoreTransaction

Overrides:

performDelete in class SQLTransaction

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

Returns:

number of deleted feature instances

Throws:

DatastoreException

performInsert

public List<FeatureId> performInsert(List<Feature> features)
                              throws DatastoreException

Description copied from class: SQLTransaction

Inserts the given feature instances into the datastore.

Specified by:

performInsert in interface DatastoreTransaction

Overrides:

performInsert in class SQLTransaction

Returns:

feature ids of the inserted (root) features

Throws:

DatastoreException

See Also:

FeatureIdAssigner

performUpdate

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

Description copied from class: SQLTransaction

Performs an update operation against the datastore.

The filter is expected to match exactly one feature which will be replaced by the specified replacement feature.

Specified by:

performUpdate in interface DatastoreTransaction

Overrides:

performUpdate in class SQLTransaction

Parameters:

mappedFeatureType - feature type that is to be updated

replacementFeature - feature instance that will replace the selected feature

filter - selects the single feature instances that is to be replaced

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

Returns:

number of updated feature instances (must be 0 or 1)

Throws:

DatastoreException

performUpdate

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

Description copied from class: SQLTransaction

Performs an update operation against the datastore.

Specified by:

performUpdate in interface DatastoreTransaction

Overrides:

performUpdate in class SQLTransaction

Parameters:

mappedFeatureType - feature type that is to be updated

replacementProps - properties and their replacement values

filter - selects the feature instances that are to be updated

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

Returns:

number of updated feature instances

Throws:

DatastoreException