/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2014, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.process.spatialstatistics.storage;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Logger;
import org.geotools.data.DataUtilities;
import org.geotools.data.FeatureWriter;
import org.geotools.data.collection.ListFeatureCollection;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.util.logging.Logging;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
/**
* General Feature Inserter
*
* @author Minpa Lee, MangoSystem
*
* @source $URL$
*/
public class MemoryFeatureInserter implements IFeatureInserter {
protected static final Logger LOGGER = Logging.getLogger(MemoryFeatureInserter.class);
int flushInterval = 0;
int featureCount = 0;
String typeName;
SimpleFeatureBuilder builder;
ListFeatureCollection features;
List<FieldMap> fieldMaps = new ArrayList<FieldMap>();
public MemoryFeatureInserter(SimpleFeatureType schema) {
this.fieldMaps.clear();
this.builder = new SimpleFeatureBuilder(schema);
this.features = new ListFeatureCollection(schema);
this.typeName = schema.getTypeName();
}
@Override
public FeatureWriter<SimpleFeatureType, SimpleFeature> getFeatureWriter() {
return null;
}
@Override
public SimpleFeatureSource getFeatureSource() {
return DataUtilities.source(features);
}
@Override
public SimpleFeatureCollection getFeatureCollection() throws IOException {
return features;
}
@Override
public int getFlushInterval() {
return flushInterval;
}
@Override
public void setFlushInterval(int flushInterval) {
this.flushInterval = flushInterval;
}
@Override
public int getFeatureCount() {
return featureCount;
}
@Override
public SimpleFeature buildFeature() throws IOException {
StringBuilder sb = new StringBuilder().append(typeName).append(".");
String id = sb.append(featureCount + 1).toString();
return builder.buildFeature(id);
}
@Override
public void write(SimpleFeatureCollection featureCollection) throws IOException {
SimpleFeatureIterator iter = featureCollection.features();
try {
while (iter.hasNext()) {
this.write(iter.next());
}
} finally {
iter.close();
}
}
@Override
public void write(SimpleFeature newFeature) throws IOException {
featureCount++;
features.add(newFeature);
}
@Override
public void rollback() throws IOException {
// nothing to do
}
@Override
public void rollback(Exception e) throws IOException {
// nothing to do
}
@Override
public void close() throws IOException {
// nothing to do
}
@Override
public void close(SimpleFeatureIterator iterator) throws IOException {
close();
if (iterator != null) {
iterator.close();
}
}
@Override
public SimpleFeature copyAttributes(SimpleFeature source, SimpleFeature target,
boolean copyGeometry) {
if (this.fieldMaps.size() == 0) {
fieldMaps = FieldMap.buildMap(source.getFeatureType(), target.getFeatureType());
}
for (FieldMap fieldMap : this.fieldMaps) {
if (fieldMap.isGeometry) {
if (copyGeometry) {
target.setDefaultGeometry(source.getDefaultGeometry());
}
} else {
target.setAttribute(fieldMap.destID, source.getAttribute(fieldMap.soruceID));
}
}
return target;
}
@Override
public void clearFieldMaps() {
this.fieldMaps.clear();
}
}