Revision 3200
Added by Jing Tao over 17 years ago
| src/edu/ucsb/nceas/metacat/spatial/SpatialDataset.java | ||
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| 53 | 53 |
*/ |
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public class SpatialDataset {
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SpatialFeatureSchema featureSchema = new SpatialFeatureSchema(); |
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private static SpatialFeatureSchema featureSchema = new SpatialFeatureSchema(); |
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private static ShapefileDataStore polygonStore = null; |
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private static ShapefileDataStore pointStore = null; |
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private static FeatureStore featureStore = null; |
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//public String polygonShpUri = MetaCatUtil.getOption("certPath") + "data/metacat_shps/data_bounds.shp";
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//public String pointShpUri = MetaCatUtil.getOption("certPath")+ "data/metacat_shps/data_points.shp";
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|
| ... | ... | |
| 67 | 71 |
/** |
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* empty constructor for SpatialDataset |
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*/ |
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public SpatialDataset() {
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public SpatialDataset() throws IOException {
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polygonStore = new ShapefileDataStore( (new File( featureSchema.polygonShpUri)).toURL() ); |
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pointStore = new ShapefileDataStore( (new File( featureSchema.pointShpUri)).toURL() ); |
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} |
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| ... | ... | |
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filter.addRightValue(filterFactory.createLiteralExpression(docid)); |
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} catch (IllegalFilterException e) {
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e.printStackTrace(); |
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throw new IOException(e.getMessage()); |
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} |
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// Begin new transaction |
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) ); |
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String lockId = "SpatialDataset.delete"; |
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if( geomType.equals("polygon") ) {
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deleteFromDataStore(polygonStore, filter, docid); |
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}else if( geomType.equals("point") ) {
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deleteFromDataStore(pointStore, filter, docid); |
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} |
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else |
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{
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throw new IOException("Unkown Geo Type "+geomType);
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} |
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try {
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boolean validGeomType = false; |
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if( geomType.equals("polygon") ) {
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dStore = new ShapefileDataStore( (new File( featureSchema.polygonShpUri )).toURL() ); |
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fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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validGeomType = true; |
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} else if( geomType.equals("point") ) {
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dStore = new ShapefileDataStore( (new File( featureSchema.pointShpUri )).toURL() ); |
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fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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validGeomType = true; |
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} |
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// Initiate the transaction |
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fStore.setTransaction( t ); |
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t.addAuthorization( lockId ); |
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if( validGeomType == true) {
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// Remove old feature |
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fStore.removeFeatures( filter ); |
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// Commit changes to shapefile |
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t.commit(); |
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log.info(" Delete docid " + docid + " from spatial cache");
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} |
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} catch (MalformedURLException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} catch (IOException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} finally {
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// Close out the transaction |
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t.close(); |
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} |
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} |
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/* |
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* Delete a feature from given spatail data store |
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*/ |
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private void deleteFromDataStore(ShapefileDataStore dStore, CompareFilter filter, String docid) |
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throws IOException |
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{
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if (dStore != null && filter != null) |
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{
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synchronized(dStore) |
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{
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// Begin new transaction |
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) ); |
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String lockId = "SpatialDataset.delete"; |
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FeatureStore fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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try {
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if (fStore != null) |
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{
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// Initiate the transaction |
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fStore.setTransaction( t ); |
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t.addAuthorization( lockId ); |
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// Remove old feature |
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fStore.removeFeatures( filter ); |
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// Commit changes to shapefile |
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t.commit(); |
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log.info(" Delete docid " + docid + " from spatial cache");
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} |
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else |
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{
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log.error("Feature store is null");
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} |
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} catch (MalformedURLException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} catch (IOException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} finally {
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// Close out the transaction |
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t.close(); |
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} |
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} |
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} |
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else if (dStore == null) |
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{
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log.error("Shape file store is null");
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} |
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} |
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/** |
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* Either inserts or updates the spatial cache with the new |
| ... | ... | |
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filter.addRightValue(filterFactory.createLiteralExpression(docid)); |
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} catch (IllegalFilterException e) {
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e.printStackTrace(); |
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throw new IOException(e.getMessage()); |
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} |
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// Begin new transaction |
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) ); |
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String lockId = "SpatialDataset.insertOrUpdate"; |
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if( geomType.equals("polygon") ) {
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insertOrUpdateDataStore(polygonStore,filter, feature, fColl, docid); |
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} else if( geomType.equals("point") ) {
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insertOrUpdateDataStore(pointStore,filter, feature, fColl, docid); |
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}else{
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throw new IOException("Unkown Geo Type "+geomType);
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} |
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try {
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boolean validGeomType = false; |
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if( geomType.equals("polygon") ) {
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dStore = new ShapefileDataStore( (new File( featureSchema.polygonShpUri )).toURL() ); |
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fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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validGeomType = true; |
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} else if( geomType.equals("point") ) {
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dStore = new ShapefileDataStore( (new File( featureSchema.pointShpUri )).toURL() ); |
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fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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validGeomType = true; |
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} |
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// Initiate the transaction |
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fStore.setTransaction( t ); |
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t.addAuthorization( lockId ); |
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if( feature != null && validGeomType == true) {
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// Remove old feature |
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fStore.removeFeatures( filter ); |
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// Create new feature collection then add it to feature Store |
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fColl.add( feature ); |
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fStore.addFeatures(fColl); |
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} |
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/* |
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* Insert or update new feature in shape file |
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*/ |
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private void insertOrUpdateDataStore(ShapefileDataStore dStore, CompareFilter filter, Feature feature, |
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FeatureCollection fColl, String docid) throws IOException |
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{
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if (dStore != null && filter != null && feature != null && fColl != null) |
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{
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synchronized(dStore) |
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{
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// Begin new transaction |
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Transaction t = new DefaultTransaction("handle");
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t.putProperty( "updating spatial cache", new Integer(7) ); |
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String lockId = "SpatialDataset.insertOrUpdate"; |
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try {
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FeatureStore fStore = (FeatureStore) dStore.getFeatureSource(dStore.getTypeNames()[0]); |
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if( fStore != null) {
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// Initiate the transaction |
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fStore.setTransaction( t ); |
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t.addAuthorization( lockId ); |
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// Remove old feature |
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fStore.removeFeatures( filter ); |
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// Commit changes to shapefile |
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t.commit(); |
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log.info(" Insert or Update docid " + docid + " from spatial cache");
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} |
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// Create new feature collection then add it to feature Store |
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fColl.add( feature ); |
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fStore.addFeatures(fColl); |
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// Commit changes to shapefile |
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t.commit(); |
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log.info(" Insert or Update docid " + docid + " from spatial cache");
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} |
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else |
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{
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log.error("Feature store is null");
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} |
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} catch (MalformedURLException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} catch (IOException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} finally {
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// Close out the transaction |
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t.close(); |
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} |
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} catch (MalformedURLException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} catch (IOException e) {
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e.printStackTrace(); |
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t.rollback(); // cancel opperations |
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} finally {
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// Close out the transaction |
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t.close(); |
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} |
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} |
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} |
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else if (dStore == null) |
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{
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log.error("Shape file store is null");
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} |
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} |
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/** |
| ... | ... | |
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public void save() {
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// Save Polygons |
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try {
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URL anURL = (new File( featureSchema.polygonShpUri )).toURL(); |
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ShapefileDataStore polygonDatastore = new ShapefileDataStore(anURL); |
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FeatureType polygonType = featureSchema.getPolygonFeatureType(); |
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polygonDatastore.createSchema( polygonType ); |
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FeatureStore polygonFeatureStore = (FeatureStore) polygonDatastore.getFeatureSource( polygonType.getTypeName() ); |
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polygonFeatureStore.addFeatures( polygonCollection ); |
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log.info(" ---- Polygons saved to " + featureSchema.polygonShpUri );
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//URL anURL = (new File( featureSchema.polygonShpUri )).toURL(); |
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//ShapefileDataStore polygonDatastore = new ShapefileDataStore(anURL); |
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if (polygonStore != null) |
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{
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synchronized(polygonStore) |
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{
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FeatureType polygonType = featureSchema.getPolygonFeatureType(); |
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polygonStore.createSchema( polygonType ); |
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FeatureStore polygonFeatureStore = (FeatureStore) polygonStore.getFeatureSource( polygonType.getTypeName() ); |
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polygonFeatureStore.addFeatures( polygonCollection ); |
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log.info(" ---- Polygons saved to " + featureSchema.polygonShpUri );
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} |
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} |
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else |
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{
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log.error("Couldn't find the polygon shape file store");
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} |
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} catch(java.net.MalformedURLException e) {
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log.error("Malformed URL Exception : "+e);
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} catch(java.io.IOException e) {
|
| ... | ... | |
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// Save Points |
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try {
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URL anURL = (new File( featureSchema.pointShpUri )).toURL(); |
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ShapefileDataStore pointDatastore = new ShapefileDataStore(anURL); |
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FeatureType pointsType = featureSchema.getPointFeatureType(); |
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pointDatastore.createSchema( pointsType ); |
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FeatureStore pointFeatureStore = (FeatureStore) pointDatastore.getFeatureSource( pointsType.getTypeName() ); |
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pointFeatureStore.addFeatures( pointCollection ); |
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log.info(" ---- Polygons saved to " + featureSchema.pointShpUri );
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//URL anURL = (new File( featureSchema.pointShpUri )).toURL(); |
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//ShapefileDataStore pointDatastore = new ShapefileDataStore(anURL); |
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if (pointStore != null) |
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{
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synchronized(pointStore) |
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{
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FeatureType pointsType = featureSchema.getPointFeatureType(); |
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pointStore.createSchema( pointsType ); |
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FeatureStore pointFeatureStore = (FeatureStore) pointStore.getFeatureSource( pointsType.getTypeName() ); |
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pointFeatureStore.addFeatures( pointCollection ); |
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log.info(" ---- Polygons saved to " + featureSchema.pointShpUri );
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} |
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} |
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else |
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{
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log.error("Couldn't find the shape point file store");
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} |
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} catch(java.net.MalformedURLException e) {
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log.error("Malformed URL Exception : "+e);
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} catch(java.io.IOException e) {
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log.error("IO Exception : "+e);
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} |
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} |
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} |
Also available in: Unified diff
Change the shape file store object to be static and make them synchronized in order to be thread safe.