svn-gvsig-desktop / trunk / libraries / libFMap_dataDB / src / org / gvsig / data / datastores / vectorial / db / sde / SDEFeatureCollectionEditing.java @ 20802
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* ${year} IVER T.I. S.A. {{Task}}
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*/
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package org.gvsig.data.datastores.vectorial.db.sde; |
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import java.util.ConcurrentModificationException; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Vector; |
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import org.gvsig.data.datastores.vectorial.db.DBAttributeDescriptor; |
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import org.gvsig.data.datastores.vectorial.db.DBDataFeatureCollection; |
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import org.gvsig.data.datastores.vectorial.db.DBFeatureType; |
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import org.gvsig.data.exception.ReadException; |
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import org.gvsig.data.vectorial.FeatureManager; |
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import org.gvsig.data.vectorial.IFeature; |
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import org.gvsig.data.vectorial.IFeatureAttributeDescriptor; |
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import org.gvsig.data.vectorial.IFeatureType; |
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import com.esri.sde.sdk.client.SeException; |
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import com.esri.sde.sdk.client.SeLayer; |
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import com.esri.sde.sdk.client.SeQuery; |
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import com.esri.sde.sdk.client.SeRow; |
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import com.esri.sde.sdk.client.SeSqlConstruct; |
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/**
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* DOCUMENT ME!
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*
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* @author Vicente Caballero Navarro
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*/
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public class SDEFeatureCollectionEditing extends DBDataFeatureCollection { |
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protected DBFeatureType featureType;
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protected String totalFilter; |
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protected SDEStore store;
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private int numReg = -1; |
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private String sql; |
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private String sqlCount; |
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private String totalOrder; |
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private FeatureManager featureManager;
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private SeLayer layer;
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private SeQuery query;
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private SeRow row;
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private boolean bFirst = true; |
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SDEFeatureCollectionEditing(FeatureManager fm, SDEStore store, |
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IFeatureType type) { |
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this.featureManager = fm;
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this.store = store;
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this.featureType = (DBFeatureType) type;
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this.totalFilter = store.getBaseWhereClause();
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this.totalOrder = store.getBaseOrder();
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this.sql = this.store.getSqlSelectPart(); |
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this.sqlCount = "Select count(*) From " + |
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((SDEStoreParameters) this.store.getParameters()).tableID();
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if (!isStringEmpty(this.totalFilter)) { |
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this.sql = this.sql + " Where " + this.totalFilter; |
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this.sqlCount = this.sqlCount + " Where " + this.totalFilter; |
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} |
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if (!isStringEmpty(this.totalOrder)) { |
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this.sql = this.sql + " Order by " + this.totalOrder; |
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} |
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} |
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/* (non-Javadoc)
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* @see java.util.Collection#size()
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*/
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public int size() { |
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checkModified(); |
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if (this.numReg < 0) { |
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this.numReg = 0; |
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try {
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Iterator iter = this.iterator(); |
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while (true) { |
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iter.next(); |
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numReg++; |
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} |
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} catch (NoSuchElementException e) { |
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//Normal condition exit
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} |
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} |
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return numReg;
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} |
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/* (non-Javadoc)
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* @see java.lang.Iterable#iterator()
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*/
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public Iterator iterator() { |
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checkModified(); |
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try {
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// Debe ser forward only
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int size = featureType.size();
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String[] names = new String[size]; |
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for (int i = 0; i < size; i++) { |
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names[i] = ((DBAttributeDescriptor) featureType.get(i)).getName(); |
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} |
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Vector theLayers = store.getConnection().getLayers();
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for (int i = 0; i < theLayers.size(); i++) { |
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SeLayer layer = (SeLayer) theLayers.elementAt(i); |
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if (layer.getQualifiedName().compareToIgnoreCase(((SDEStoreParameters) this.store.getParameters()).tableID()) == 0) { |
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this.layer = layer;
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break;
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} |
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} |
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SeSqlConstruct sqlCons = new SeSqlConstruct(layer.getQualifiedName());
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query = new SeQuery(store.getConnection(), names, sqlCons);
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query.prepareQuery(); |
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query.execute(); |
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row = query.fetch(); |
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if (row == null) { |
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bFirst = true;
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} else {
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bFirst = true;
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} |
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} catch (SeException e) {
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throw new RuntimeException(e); |
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} catch (ReadException e) {
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throw new RuntimeException(e); |
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} |
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SDEIterator dbfIter = new SDEIterator(this.store, this.featureType); |
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return dbfIter;
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} |
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/* (non-Javadoc)
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* @see org.gvsig.data.IDataCollection#dispose()
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*/
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public void dispose() { |
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this.store.deleteObserver(this); |
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this.store = null; |
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this.featureManager = null; |
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this.featureType = null; |
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} |
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protected class SDEIterator implements Iterator { |
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protected long position = 0; |
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private boolean nextChecked = false; |
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private IFeature feature;
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private SDEStore store;
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private DBFeatureType featureType;
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public SDEIterator(SDEStore store, DBFeatureType featureType) {
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this.store = store;
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this.featureType = featureType;
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position = 0;
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} |
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protected void checkModified() { |
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if (modified) {
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throw new ConcurrentModificationException( |
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"FeatureCollection modified");
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} |
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} |
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public boolean hasNext() { |
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checkModified(); |
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IFeature feature = null;
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if (nextChecked) {
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return feature != null; |
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} |
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nextChecked = true;
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while (true) { |
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try {
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if (bFirst) {
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bFirst = false;
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} else {
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try {
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row = query.fetch(); |
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} catch (Exception e) { |
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query.close(); |
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if (position < featureManager.getNum()) {
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try {
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feature = featureManager.getFeature((int) position,
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store); |
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} catch (ReadException e1) {
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throw new RuntimeException(new ReadException( |
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this.store.getName(), e1));
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} |
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position++; |
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} else {
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this.feature = null; |
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return false; |
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} |
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} |
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} |
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if (row == null) { |
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query.close(); |
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if (position < featureManager.getNum()) {
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try {
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feature = featureManager.getFeature((int) position,
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store); |
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} catch (ReadException e) {
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throw new RuntimeException(new ReadException( |
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this.store.getName(), e));
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} |
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position++; |
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} else {
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this.feature = null; |
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return false; |
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} |
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} else {
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feature = nextFeature(); |
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} |
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} catch (SeException e) {
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throw new RuntimeException(e); |
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} |
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if (featureManager.isDeleted(feature)) {
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continue;
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} |
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this.feature = feature;
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return true; |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see java.util.Iterator#next()
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*/
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public Object next() { |
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checkModified(); |
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if (!nextChecked) {
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hasNext(); |
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} |
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nextChecked = false;
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if (this.feature == null) { |
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throw new NoSuchElementException(); |
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} |
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IFeature feature = this.feature;
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this.feature = null; |
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return feature;
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} |
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private IFeature nextFeature() {
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SDEFeature feat = null;
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try {
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feat = new SDEFeature(featureType, store, row);
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feat.loading(); |
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Iterator iterator = featureType.iterator();
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while (iterator.hasNext()) {
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IFeatureAttributeDescriptor descriptor = (IFeatureAttributeDescriptor) iterator.next(); |
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feat.loadValueFromResulset(row, descriptor); |
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} |
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} catch (ReadException e) {
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throw new RuntimeException(e); |
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} |
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feat.stopLoading(); |
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return feat;
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} |
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/*
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* (non-Javadoc)
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* @see java.util.Iterator#remove()
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*/
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public void remove() { |
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throw new UnsupportedOperationException(); |
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} |
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} |
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} |