use of org.geotoolkit.data.shapefile.shp.ShapeType in project geotoolkit by Geomatys.
the class ShapefileFeatureStore method createFeatureType.
// //////////////////////////////////////////////////////////////////////////
// schema manipulation /////////////////////////////////////////////////////
// //////////////////////////////////////////////////////////////////////////
/**
* Set the FeatureType of this DataStore. This method will delete any
* existing local resources or throw an IOException if the featurestore is
* remote.
*
* @param featureType The desired FeatureType.
* @throws DataStoreException If the featurestore is remote.
*
* @todo must synchronize this properly
*/
@Override
public void createFeatureType(final FeatureType featureType) throws DataStoreException {
final GenericName typeName = featureType.getName();
if (!isWritable(typeName.toString())) {
throw new DataStoreException("Read-only acces prevent type creation.");
}
if (typeName == null) {
throw new DataStoreException("Type name can not be null.");
}
if (!featureType.isSimple()) {
throw new DataStoreException("Feature type must not be null and must be a simple feature type.");
}
if (!featureType.getName().equals(typeName)) {
throw new DataStoreException("Shapefile featurestore can only hold typename same as feature type name.");
}
try {
// delete the files
shpFiles.delete();
} catch (IOException ex) {
throw new DataStoreException("Cannot reset datastore content", ex);
}
final AccessManager locker = shpFiles.createLocker();
// update schema and name
name = typeName;
schema = featureType;
AttributeType desc;
try {
desc = Features.toAttribute(FeatureExt.getDefaultGeometry(featureType)).orElse(null);
} catch (PropertyNotFoundException e) {
getLogger().log(Level.FINE, e, () -> String.format("No geometry can be found in given datatype%n%s", featureType));
desc = null;
}
CoordinateReferenceSystem crs = null;
final Class<?> geomType;
final ShapeType shapeType;
if (desc != null) {
crs = FeatureExt.getCRS(desc);
geomType = desc.getValueClass();
shapeType = ShapeType.findBestGeometryType(geomType);
} else {
geomType = null;
shapeType = ShapeType.NULL;
}
if (shapeType == ShapeType.UNDEFINED) {
throw new DataStoreException("Cannot create a shapefile whose geometry type is " + geomType);
}
try (Closeable disposeLocker = locker::disposeReaderAndWriters) {
final StorageFile shpStoragefile = locker.getStorageFile(SHP);
final StorageFile shxStoragefile = locker.getStorageFile(SHX);
final StorageFile dbfStoragefile = locker.getStorageFile(DBF);
final StorageFile prjStoragefile = locker.getStorageFile(PRJ);
final StorageFile cpgStoragefile = locker.getStorageFile(CPG);
try (FileChannel shpChannel = shpStoragefile.getWriteChannel();
FileChannel shxChannel = shxStoragefile.getWriteChannel()) {
try (ShapefileWriter writer = new ShapefileWriter(shpChannel, shxChannel)) {
// try to get the domain first
final Envelope domain = CRS.getDomainOfValidity(crs);
if (domain != null) {
writer.writeHeaders(new JTSEnvelope2D(domain), shapeType, 0, 100);
} else {
// try to reproject the single overall envelope keeping poles out of the way
final JTSEnvelope2D env = new JTSEnvelope2D(-179, 179, -89, 89, CommonCRS.WGS84.normalizedGeographic());
JTSEnvelope2D transformedBounds;
if (crs != null) {
try {
transformedBounds = env.transform(crs);
} catch (Exception t) {
getLogger().log(Level.WARNING, t.getLocalizedMessage(), t);
// It can happen for local projections :
transformedBounds = new JTSEnvelope2D(crs);
}
} else {
transformedBounds = env;
}
writer.writeHeaders(transformedBounds, shapeType, 0, 100);
}
}
}
final DbaseFileHeader dbfheader = DbaseFileHeader.createDbaseHeader(schema);
dbfheader.setNumRecords(0);
try (WritableByteChannel dbfChannel = dbfStoragefile.getWriteChannel()) {
dbfheader.writeHeader(dbfChannel);
}
if (crs != null) {
// .prj files should have no carriage returns in them, this messes up
// ESRI's ArcXXX software, so we'll be compatible
final WKTFormat format = new WKTFormat(Locale.ENGLISH, null);
format.setConvention(Convention.WKT1_COMMON_UNITS);
format.setNameAuthority(Citations.ESRI);
format.setIndentation(WKTFormat.SINGLE_LINE);
final String s = format.format(crs);
IOUtilities.writeString(s, prjStoragefile.getFile(), Charset.forName("ISO-8859-1"));
} else {
getLogger().warning("PRJ file not generated for null CoordinateReferenceSystem");
Path prjFile = prjStoragefile.getFile();
Files.deleteIfExists(prjFile);
}
// write dbf encoding .cpg
CpgFiles.write(dbfCharset, cpgStoragefile.getFile());
} catch (IOException ex) {
throw new DataStoreException(ex);
}
// Once all writings have succeeded, we can commit them
try {
locker.replaceStorageFiles();
} catch (IOException e) {
throw new DataStoreException("Failed commiting file changes", e);
}
// force reading it again since the file type may be a little different
name = null;
schema = null;
// we still preserve the original type name and attribute classes which may be more restricted
final FeatureTypeBuilder ftb = new FeatureTypeBuilder(getFeatureType());
ftb.setName(typeName);
final AttributeTypeBuilder gtb = (AttributeTypeBuilder) ftb.getProperty("the_geom");
if (Geometry.class.equals(gtb.getValueClass())) {
gtb.setValueClass(shapeType.bestJTSClass());
}
gtb.setName(desc.getName());
for (PropertyType pt : featureType.getProperties(true)) {
if (pt instanceof AttributeType) {
final AttributeType at = (AttributeType) pt;
if (!Geometry.class.isAssignableFrom(at.getValueClass())) {
try {
((AttributeTypeBuilder) ftb.getProperty(at.getName().toString())).setValueClass(at.getValueClass()).setName(at.getName());
} catch (PropertyNotFoundException ex) {
}
}
}
}
schema = ftb.build();
name = schema.getName();
}
use of org.geotoolkit.data.shapefile.shp.ShapeType in project geotoolkit by Geomatys.
the class ShapefileFeatureWriter method flush.
/**
* Go back and update the headers with the required info.
*
* @throws IOException DOCUMENT ME!
*/
protected void flush() throws IOException {
// another problem.
if ((records <= 0) && (shapeType == null)) {
try {
final PropertyType geom = FeatureExt.getDefaultGeometry(featureType);
final Optional<Class> geomClass = Features.toAttribute(geom).map(AttributeType::getValueClass);
shapeType = geomClass.map(ShapeType::findBestGeometryType).orElse(ShapeType.NULL);
if (shapeType == ShapeType.UNDEFINED) {
throw new IOException("Cannot handle geometry class : " + (geomClass.isPresent() ? geomClass.get() : "null"));
}
} catch (PropertyNotFoundException e) {
shapeType = ShapeType.NULL;
}
}
shpWriter.writeHeaders(bounds, shapeType, records, shapefileLength);
dbfHeader.setNumRecords(records);
dbfChannel.position(0);
dbfHeader.writeHeader(dbfChannel);
}
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