package org.geotools;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import javax.xml.namespace.QName;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.TransformerException;
import net.opengis.wfs.FeatureCollectionType;
import net.opengis.wfs.WfsFactory;
import org.eclipse.xsd.XSDComplexTypeDefinition;
import org.eclipse.xsd.XSDCompositor;
import org.eclipse.xsd.XSDDerivationMethod;
import org.eclipse.xsd.XSDElementDeclaration;
import org.eclipse.xsd.XSDFactory;
import org.eclipse.xsd.XSDForm;
import org.eclipse.xsd.XSDImport;
import org.eclipse.xsd.XSDModelGroup;
import org.eclipse.xsd.XSDParticle;
import org.eclipse.xsd.XSDSchema;
import org.eclipse.xsd.XSDTypeDefinition;
import org.eclipse.xsd.util.XSDConstants;
import org.eclipse.xsd.util.XSDResourceImpl;
import org.geotools.data.DataUtilities;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.feature.AttributeTypeBuilder;
import org.geotools.feature.DefaultFeatureCollection;
import org.geotools.feature.FeatureCollections;
import org.geotools.feature.NameImpl;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.feature.type.SchemaImpl;
import org.geotools.gml.producer.FeatureTransformer;
import org.geotools.gtxml.GTXML;
import org.geotools.referencing.CRS;
import org.geotools.xml.Configuration;
import org.geotools.xml.Encoder;
import org.geotools.xml.Parser;
import org.geotools.xml.ParserDelegate;
import org.geotools.xml.StreamingParser;
import org.geotools.xml.XSD;
import org.geotools.xml.XSDParserDelegate;
import org.geotools.xs.XS;
import org.geotools.xs.XSConfiguration;
import org.geotools.xs.XSSchema;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
import org.opengis.feature.type.AttributeDescriptor;
import org.opengis.feature.type.AttributeType;
import org.opengis.feature.type.ComplexType;
import org.opengis.feature.type.FeatureType;
import org.opengis.feature.type.Name;
import org.opengis.feature.type.PropertyDescriptor;
import org.opengis.feature.type.Schema;
import org.opengis.referencing.crs.CoordinateReferenceSystem;
import org.xml.sax.SAXException;
import com.vividsolutions.jts.geom.Geometry;
/**
* UtilityClass for encoding GML content.
* <p>
* This utility class uses a range of GeoTools technologies as required; if you would like finer
* grain control over the encoding process please review the source code of this class and take your
* own measures.
* <p>
*
* @source $URL: http://svn.osgeo.org/geotools/trunk/modules/library/xml/src/main/java/org/geotools/GML.java $
*/
public class GML {
/** Version of encoder to use */
public static enum Version {
GML2, GML3, WFS1_0, WFS1_1
}
private Charset encoding = Charset.forName("UTF-8");
private URL baseURL;
/** GML Configuration to use */
private Configuration gmlConfiguration;
private String gmlNamespace;
private String gmlLocation;
/**
* Schema or profile used to map between Java classes and XML elements.
*/
private List<Schema> schemaList = new ArrayList<Schema>();
String prefix = null;
String namespace = null;
private final Version version;
private boolean legacy;
private CoordinateReferenceSystem crs;
/**
* Construct a GML utility class to work with the indicated version of GML.
* <p>
* Note that when working with GML2 you need to supply additional information prior to use (in
* order to indicate where for XSD file is located).
*
* @param version
* Version of GML to use
*/
public GML(Version version) {
this.version = version;
init();
}
/**
* Engage legacy support for GML2.
* <p>
* The GML2 support for FeatureTransformer is much faster then that provided by the GTXML
* parser/encoder. This speed is at the expense of getting the up front configuration exactly
* correct (something you can only tell when parsing the produced result!). Setting this value
* to false will use the same GMLConfiguration employed when parsing and has less risk of
* producing invalid content.
*
* @param legacy
*/
public void setLegacy(boolean legacy) {
this.legacy = legacy;
}
/**
* Set the target namespace for the encoding.
*
* @param prefix
* @param namespace
*/
public void setNamespace(String prefix, String namespace) {
this.prefix = prefix;
this.namespace = namespace;
}
/**
* Set the encoding to use.
*
* @param encoding
*/
public void setEncoding(Charset encoding) {
this.encoding = encoding;
}
/**
* Base URL to use when encoding
*/
public void setBaseURL(URL baseURL) {
this.baseURL = baseURL;
}
/**
* Coordinate reference system to use when decoding.
* <p>
* In a few cases (such as decoding a SimpleFeatureType) the file format does not include the
* required CooridinateReferenceSystem and you are asked to supply it.
*
* @param crs
*/
public void setCoordinateReferenceSystem(CoordinateReferenceSystem crs) {
this.crs = crs;
}
/**
* Set up out of the box configuration for GML encoding.
* <ul>
* <li>GML2</li>
* <li>GML3</li>
* </ul>
* The following are not avialable yet:
* <ul>
* <li>gml3.2 - not yet available</li>
* <li>wfs1.0 - not yet available</li>
* <li>wfs1.1 - not yet available</li>
* </ul>
*
* @param version
*/
protected void init() {
List<Schema> schemas = new ArrayList<Schema>();
schemas.add(new XSSchema().profile()); // encoding of common java types
Schema hack = new SchemaImpl(XS.NAMESPACE);
AttributeTypeBuilder builder = new AttributeTypeBuilder();
builder.setName("date");
builder.setBinding(Date.class);
hack.put(new NameImpl(XS.DATETIME), builder.buildType());
schemas.add(hack);
// GML 2
//
if (Version.GML2 == version) {
gmlNamespace = org.geotools.gml2.GML.NAMESPACE;
gmlLocation = "gml/2.1.2/feature.xsd";
gmlConfiguration = new org.geotools.gml2.GMLConfiguration();
schemas.add(new org.geotools.gml2.GMLSchema().profile());
}
if (Version.WFS1_0 == version) {
gmlNamespace = org.geotools.gml2.GML.NAMESPACE;
gmlLocation = "gml/2.1.2/feature.xsd";
gmlConfiguration = new org.geotools.wfs.v1_0.WFSConfiguration();
schemas.add(new org.geotools.gml2.GMLSchema().profile());
}
// GML 3
//
if (Version.GML3 == version) {
gmlNamespace = org.geotools.gml3.GML.NAMESPACE;
gmlLocation = "gml/3.1.1/base/gml.xsd";
gmlConfiguration = new org.geotools.gml3.GMLConfiguration();
schemas.add(new org.geotools.gml3.GMLSchema().profile());
}
if (Version.WFS1_1 == version) {
gmlNamespace = org.geotools.gml3.GML.NAMESPACE;
gmlLocation = "gml/3.1.1/base/gml.xsd";
gmlConfiguration = new org.geotools.wfs.v1_1.WFSConfiguration();
schemas.add(new org.geotools.gml3.GMLSchema().profile());
}
schemaList = schemas;
}
private Entry<Name, AttributeType> searchSchemas(Class<?> binding) {
// sort by isAssignable so we get the most specific match possible
//
Comparator<Entry<Name, AttributeType>> sort = new Comparator<Entry<Name, AttributeType>>() {
public int compare(Entry<Name, AttributeType> o1, Entry<Name, AttributeType> o2) {
Class<?> binding1 = o1.getValue().getBinding();
Class<?> binding2 = o2.getValue().getBinding();
if (binding1.equals(binding2)) {
return 0;
}
if (binding1.isAssignableFrom(binding2)) {
return 1;
} else {
return 0;
}
}
};
List<Entry<Name, AttributeType>> match = new ArrayList<Entry<Name, AttributeType>>();
// process the listed profiles recording all available matches
for (Schema profile : schemaList) {
for (Entry<Name, AttributeType> entry : profile.entrySet()) {
AttributeType type = entry.getValue();
if (type.getBinding().isAssignableFrom(binding)) {
match.add(entry);
}
}
}
Collections.sort(match, sort);
Iterator<Entry<Name, AttributeType>> iter = match.iterator();
if (iter.hasNext()) {
Entry<Name, AttributeType> entry = iter.next();
return entry;
} else {
return null; // no binding found that matches
}
}
@SuppressWarnings("unchecked")
public void encode(OutputStream out, SimpleFeatureCollection collection) throws IOException {
if (version == Version.GML2) {
if (legacy) {
encodeLegacyGML2(out, collection);
} else {
throw new IllegalStateException(
"Cannot encode a feature collection using GML2 (only WFS)");
}
}
if (version == Version.WFS1_0) {
Encoder e = new Encoder(new org.geotools.wfs.v1_0.WFSConfiguration());
e.getNamespaces().declarePrefix(prefix, namespace);
e.setIndenting(true);
FeatureCollectionType featureCollectionType = WfsFactory.eINSTANCE
.createFeatureCollectionType();
featureCollectionType.getFeature().add(collection);
e.encode(featureCollectionType, org.geotools.wfs.WFS.FeatureCollection, out);
}
if (version == Version.WFS1_1) {
Encoder e = new Encoder(new org.geotools.wfs.v1_1.WFSConfiguration());
e.getNamespaces().declarePrefix(prefix, namespace);
e.setIndenting(true);
FeatureCollectionType featureCollectionType = WfsFactory.eINSTANCE
.createFeatureCollectionType();
featureCollectionType.getFeature().add(collection);
e.encode(featureCollectionType, org.geotools.wfs.WFS.FeatureCollection, out);
}
}
private void encodeLegacyGML2(OutputStream out, SimpleFeatureCollection collection)
throws IOException {
final SimpleFeatureType TYPE = collection.getSchema();
FeatureTransformer transform = new FeatureTransformer();
transform.setIndentation(4);
transform.setGmlPrefixing(true);
if (prefix != null && namespace != null) {
transform.getFeatureTypeNamespaces().declareDefaultNamespace(prefix, namespace);
transform.addSchemaLocation(prefix, namespace);
// transform.getFeatureTypeNamespaces().declareDefaultNamespace("", namespace );
}
if (TYPE.getName().getNamespaceURI() != null && TYPE.getUserData().get("prefix") != null) {
String typeNamespace = TYPE.getName().getNamespaceURI();
String typePrefix = (String) TYPE.getUserData().get("prefix");
transform.getFeatureTypeNamespaces().declareNamespace(TYPE, typePrefix, typeNamespace);
} else if (prefix != null && namespace != null) {
// ignore namespace URI in feature type
transform.getFeatureTypeNamespaces().declareNamespace(TYPE, prefix, namespace);
} else {
// hopefully that works out for you then
}
// we probably need to do a wfs feaure collection here?
transform.setCollectionPrefix(null);
transform.setCollectionNamespace(null);
// other configuration
transform.setCollectionBounding(true);
transform.setEncoding(encoding);
// configure additional feature namespace lookup
transform.getFeatureNamespaces();
String srsName = CRS.toSRS(TYPE.getCoordinateReferenceSystem());
if (srsName != null) {
transform.setSrsName(srsName);
}
try {
transform.transform(collection, out);
} catch (TransformerException e) {
throw (IOException) new IOException("Failed to encode feature collection:" + e)
.initCause(e);
}
}
/**
* Encode the provided SimpleFeatureType into an XSD file, using a target namespace
* <p>
* When encoding the simpleFeatureType:
* <ul>
* <li>target prefix/namespace can be provided by prefix and namespace parameters. This is the
* default for the entire XSD document.</li>
* <li>simpleFeatureType.geName().getNamespaceURI() is used for the simpleFeatureType itself,
* providing simpleFeatureType.getUserData().get("prefix") is defined</li>
* </ul>
*
* @param simpleFeatureType
* To be encoded as an XSD document
* @param prefix
* Prefix to use for for target namespace
* @param namespace
* Target namespace
*/
public void encode(OutputStream out, SimpleFeatureType simpleFeatureType) throws IOException {
XSDSchema xsd = xsd(simpleFeatureType);
XSDResourceImpl.serialize(out, xsd.getElement(), encoding.name());
}
/**
* Decode a typeName from the provided schemaLocation.
* <p>
* The XMLSchema does not include CoordinateReferenceSystem we need to ask you to supply this
* information.
*
* @param schemaLocation
* @param typeName
* @return SimpleFeatureType
* @throws IOException
*/
public SimpleFeatureType decodeSimpleFeatureType(URL schemaLocation, Name typeName)
throws IOException {
if (Version.WFS1_1 == version) {
final QName featureName = new QName(typeName.getNamespaceURI(), typeName.getLocalPart());
String namespaceURI = featureName.getNamespaceURI();
String uri = schemaLocation.toExternalForm();
Configuration wfsConfiguration = new org.geotools.gml3.ApplicationSchemaConfiguration(
namespaceURI, uri);
FeatureType parsed = GTXML.parseFeatureType(wfsConfiguration, featureName, crs);
return DataUtilities.simple(parsed);
}
if (Version.WFS1_0 == version) {
final QName featureName = new QName(typeName.getNamespaceURI(), typeName.getLocalPart());
String namespaceURI = featureName.getNamespaceURI();
String uri = schemaLocation.toExternalForm();
XSD xsd = new org.geotools.gml2.ApplicationSchemaXSD(namespaceURI, uri);
Configuration configuration = new Configuration(xsd) {
{
addDependency(new XSConfiguration());
addDependency(gmlConfiguration); // use our GML configuration
}
protected void registerBindings(java.util.Map bindings) {
// we have no special bindings
}
};
FeatureType parsed = GTXML.parseFeatureType(configuration, featureName, crs);
return DataUtilities.simple(parsed);
}
return null;
}
public SimpleFeatureCollection decodeFeatureCollection(InputStream in) throws IOException,
SAXException, ParserConfigurationException {
if (Version.GML2 == version || Version.WFS1_0 == version || Version.GML2 == version
|| Version.GML3 == version || Version.WFS1_0 == version
|| Version.WFS1_1 == version) {
Parser parser = new Parser(gmlConfiguration);
Object obj = parser.parse(in);
SimpleFeatureCollection collection = toFeatureCollection(obj);
return collection;
}
return null;
}
/**
* Convert parse results into a SimpleFeatureCollection.
*
* @param obj SimpleFeatureCollection, Collection<?>, SimpleFeature, etc...
* @return SimpleFeatureCollection of the results
*/
private SimpleFeatureCollection toFeatureCollection(Object obj) {
if (obj == null) {
return null; // not available?
}
if (obj instanceof SimpleFeatureCollection) {
return (SimpleFeatureCollection) obj;
}
if (obj instanceof Collection<?>) {
Collection<?> collection = (Collection<?>) obj;
SimpleFeatureCollection simpleFeatureCollection = simpleFeatureCollection(collection);
return simpleFeatureCollection;
}
if (obj instanceof SimpleFeature) {
SimpleFeature feature = (SimpleFeature) obj;
return DataUtilities.collection(feature);
}
if (obj instanceof FeatureCollectionType) {
FeatureCollectionType collectionType = (FeatureCollectionType) obj;
for (Object entry : collectionType.getFeature()) {
SimpleFeatureCollection collection = toFeatureCollection(entry);
if (entry != null) {
return collection;
}
}
return null; // nothing found
} else {
throw new ClassCastException(obj.getClass()
+ " produced when FeatureCollection expected"
+ " check schema use of AbstractFeatureCollection");
}
}
/**
* Allow the parsing of features as a stream; the returned iterator can be used to step through
* the inputstream of content one feature at a time without loading everything into memory.
* <p>
* The schema used by the XML is consulted to determine what element extends AbstractFeature.
*
* @param in
* @return Iterator that can be used to parse features one at a time
* @throws SAXException
* @throws ParserConfigurationException
* @throws IOException
*/
public SimpleFeatureIterator decodeFeatureIterator(InputStream in) throws IOException,
ParserConfigurationException, SAXException {
return decodeFeatureIterator(in, null);
}
/**
* Allow the parsing of features as a stream; the returned iterator can be used to step through
* the inputstream of content one feature at a time without loading everything into memory.
* <p>
* The use of an elementName is optional; and can be used as a workaround in cases where the
* schema is not available or correctly defined. The returned elements are wrapped up as a
* Feature if needed. This mehtod can be used to retrive only the Geometry elements from a GML
* docuemnt.
*
* @param in
* InputStream used as a source of SimpleFeature content
* @param xpath
* Optional xpath used to indicate simple feature element; the schema will be checked
* for an entry that extends AbstratFeatureType
* @return
* @throws SAXException
* @throws ParserConfigurationException
*/
public SimpleFeatureIterator decodeFeatureIterator(InputStream in, QName elementName)
throws IOException, ParserConfigurationException, SAXException {
if (Version.GML2 == version || Version.GML3 == version || Version.WFS1_0 == version
|| Version.WFS1_1 == version) {
// ParserDelegate parserDelegate = new XSDParserDelegate( gmlConfiguration );
StreamingParser parser;
if (elementName != null) {
parser = new StreamingParser(gmlConfiguration, in, elementName);
} else {
parser = new StreamingParser(gmlConfiguration, in, SimpleFeature.class);
}
return iterator(parser);
}
return null;
}
/**
* Go through collection contents and morph contents into SimpleFeatures as required.
*
* @param collection
* @return SimpleFeatureCollection
*/
private SimpleFeatureCollection simpleFeatureCollection(Collection<?> collection) {
SimpleFeatureCollection featureCollection = FeatureCollections.newCollection();
SimpleFeatureType schema = null;
for (Object obj : collection) {
if (schema == null) {
schema = simpleType(obj);
}
SimpleFeature feature = simpleFeature(obj, schema);
featureCollection.add(feature);
}
return featureCollection;
}
/**
* Used to wrap up a StreamingParser as a Iterator<SimpleFeature>.
* <p>
* This iterator is actually forgiving; and willing to "morph" content into a SimpleFeature if
* needed.
* <ul>
* <li>SimpleFeature - is returned as is
* <li>
*
* @param parser
* @return
*/
protected SimpleFeatureIterator iterator(final StreamingParser parser) {
return new SimpleFeatureIterator() {
SimpleFeatureType schema;
Object next;
public boolean hasNext() {
if (next != null) {
return true;
}
next = parser.parse();
return next != null;
}
public SimpleFeature next() {
if (next == null) {
next = parser.parse();
}
if (next != null) {
try {
if (schema == null) {
schema = simpleType(next);
}
SimpleFeature feature = simpleFeature(next, schema);
return feature;
} finally {
next = null; // we have tried processing this one now
}
} else {
return null; // nothing left
}
}
public void close() {
schema = null;
}
};
}
protected SimpleFeatureType simpleType(Object obj) {
if (obj instanceof SimpleFeature) {
SimpleFeature feature = (SimpleFeature) obj;
return feature.getFeatureType();
}
if (obj instanceof Map<?, ?>) {
Map<?, ?> map = (Map<?, ?>) obj;
SimpleFeatureTypeBuilder build = new SimpleFeatureTypeBuilder();
build.setName("Unknown");
for (Map.Entry<?, ?> entry : map.entrySet()) {
String key = (String) entry.getKey();
Object value = entry.getValue();
Class<?> binding = value == null ? Object.class : value.getClass();
if (value instanceof Geometry) {
Geometry geom = (Geometry) value;
Object srs = geom.getUserData();
if (srs instanceof CoordinateReferenceSystem) {
build.add(key, binding, (CoordinateReferenceSystem) srs);
} else if (srs instanceof Integer) {
build.add(key, binding, (Integer) srs);
} else if (srs instanceof String) {
build.add(key, binding, (String) srs);
} else {
build.add(key, binding);
}
} else {
build.add(key, binding);
}
}
SimpleFeatureType schema = build.buildFeatureType();
return schema;
}
if (obj instanceof Geometry) {
Geometry geom = (Geometry) obj;
Class<?> binding = geom.getClass();
Object srs = geom.getUserData();
SimpleFeatureTypeBuilder build = new SimpleFeatureTypeBuilder();
build.setName("Unknown");
if (srs instanceof CoordinateReferenceSystem) {
build.add("the_geom", binding, (CoordinateReferenceSystem) srs);
} else if (srs instanceof Integer) {
build.add("the_geom", binding, (Integer) srs);
} else if (srs instanceof String) {
build.add("the_geom", binding, (String) srs);
} else {
build.add("the_geom", binding);
}
build.setDefaultGeometry("the_geom");
SimpleFeatureType schema = build.buildFeatureType();
return schema;
}
return null;
}
/**
* Morph provided obj to a SimpleFeature if possible.
*
* @param obj
* @param schema
* @return SimpleFeature, or null if not possible
*/
protected SimpleFeature simpleFeature(Object obj, SimpleFeatureType schema) {
if (schema == null) {
schema = simpleType(obj);
}
if (obj instanceof SimpleFeature) {
return (SimpleFeature) obj;
}
if (obj instanceof Map<?, ?>) {
Map<?, ?> map = (Map<?, ?>) obj;
Object values[] = new Object[schema.getAttributeCount()];
for (int i = 0; i < schema.getAttributeCount(); i++) {
AttributeDescriptor descriptor = schema.getDescriptor(i);
String key = descriptor.getLocalName();
Object value = map.get(key);
values[i] = value;
}
SimpleFeature feature = SimpleFeatureBuilder.build(schema, values, null);
return feature;
}
if (obj instanceof Geometry) {
Geometry geom = (Geometry) obj;
SimpleFeatureBuilder build = new SimpleFeatureBuilder(schema);
build.set(schema.getGeometryDescriptor().getName(), geom);
SimpleFeature feature = build.buildFeature(null);
return feature;
}
return null; // not available as a feature!
}
@SuppressWarnings("unchecked")
protected XSDSchema xsd(SimpleFeatureType simpleFeatureType) throws IOException {
XSDFactory factory = XSDFactory.eINSTANCE;
XSDSchema xsd = factory.createXSDSchema();
xsd.setSchemaForSchemaQNamePrefix("xsd");
xsd.getQNamePrefixToNamespaceMap().put("xsd", XSDConstants.SCHEMA_FOR_SCHEMA_URI_2001);
xsd.setElementFormDefault(XSDForm.get(XSDForm.QUALIFIED));
if (baseURL == null) {
throw new IllegalStateException("Please setBaseURL prior to encoding");
}
if (prefix != null || namespace != null) {
xsd.setTargetNamespace(namespace);
xsd.getQNamePrefixToNamespaceMap().put(prefix, namespace);
}
if (simpleFeatureType.getName().getNamespaceURI() != null
&& simpleFeatureType.getUserData().get("prefix") != null) {
String providedNamespace = simpleFeatureType.getName().getNamespaceURI();
String providedPrefix = (String) simpleFeatureType.getUserData().get("prefix");
xsd.getQNamePrefixToNamespaceMap().put(providedPrefix, providedNamespace);
}
if (simpleFeatureType.getUserData().get("schemaURI") != null) {
throw new IllegalArgumentException("Unable to support app-schema supplied types");
}
// import GML import
XSDImport gml = factory.createXSDImport();
gml.setNamespace(gmlNamespace);
gml.setSchemaLocation(baseURL.toString() + "/" + gmlLocation);
gml.setResolvedSchema(gmlConfiguration.getXSD().getSchema());
xsd.getContents().add(gml);
xsd.getQNamePrefixToNamespaceMap().put("gml", gmlNamespace);
xsd.getQNamePrefixToNamespaceMap().put("gml", "http://www.opengis.net/gml");
XSDElementDeclaration element = factory.createXSDElementDeclaration();
element.setName(simpleFeatureType.getTypeName());
XSDElementDeclaration _FEATURE = xsd.resolveElementDeclaration(gmlNamespace, "_Feature");
element.setSubstitutionGroupAffiliation(_FEATURE);
XSDComplexTypeDefinition ABSTRACT_FEATURE_TYPE = xsd.resolveComplexTypeDefinition(
gmlNamespace, "AbstractFeatureType");
XSDComplexTypeDefinition featureType = xsd(xsd, simpleFeatureType, ABSTRACT_FEATURE_TYPE);
// package up and add to xsd
element.setTypeDefinition(featureType);
xsd.getContents().add(element);
xsd.updateElement();
return xsd;
}
/**
* Build the XSD definition for the provided type.
* <p>
* The generated definition is recorded in the XSDSchema prior to being returned.
*
* @param xsd
* The XSDSchema being worked on
* @param type
* ComplexType to capture as an encoding, usually a SimpleFeatureType
* @param L_TYPE
* definition to use as the base type, or null
* @return XSDComplexTypeDefinition generated for the provided type
*/
@SuppressWarnings("unchecked")
protected XSDComplexTypeDefinition xsd(XSDSchema xsd, ComplexType type,
final XSDComplexTypeDefinition BASE_TYPE) {
XSDFactory factory = XSDFactory.eINSTANCE;
XSDComplexTypeDefinition definition = factory.createXSDComplexTypeDefinition();
definition.setName(type.getName().getLocalPart());
definition.setDerivationMethod(XSDDerivationMethod.EXTENSION_LITERAL);
if (BASE_TYPE != null) {
definition.setBaseTypeDefinition(BASE_TYPE);
}
List<String> skip = Collections.emptyList();
if ("AbstractFeatureType".equals(BASE_TYPE.getName())) {
// should look at ABSTRACT_FEATURE_TYPE to determine contents to skip
skip = Arrays.asList(new String[] { "nounds", "description", "boundedBy" });
}
// attributes
XSDModelGroup attributes = factory.createXSDModelGroup();
attributes.setCompositor(XSDCompositor.SEQUENCE_LITERAL);
Name anyName = new NameImpl(XS.NAMESPACE, XS.ANYTYPE.getLocalPart());
for (PropertyDescriptor descriptor : type.getDescriptors()) {
if (descriptor instanceof AttributeDescriptor) {
AttributeDescriptor attributeDescriptor = (AttributeDescriptor) descriptor;
if (skip.contains(attributeDescriptor.getLocalName())) {
continue;
}
XSDElementDeclaration attribute = factory.createXSDElementDeclaration();
attribute.setName(attributeDescriptor.getLocalName());
attribute.setNillable(attributeDescriptor.isNillable());
Name name = attributeDescriptor.getType().getName();
// return the first match.
if (!anyName.equals(name)) {
AttributeType attributeType = attributeDescriptor.getType();
if (attributeType instanceof ComplexType) {
ComplexType complexType = (ComplexType) attributeType;
// any complex contents must resolve (we cannot encode against
// an abstract type for example)
if (xsd.resolveTypeDefinition(name.getNamespaceURI(), name.getLocalPart()) == null) {
// not yet added; better add it into the mix
xsd(xsd, complexType, null);
}
} else {
Class<?> binding = attributeType.getBinding();
Entry<Name, AttributeType> entry = searchSchemas(binding);
if (entry == null) {
throw new IllegalStateException("No type for " + attribute.getName()
+ " (" + binding.getName() + ")");
}
name = entry.getKey();
}
}
XSDTypeDefinition attributeDefinition = xsd.resolveTypeDefinition(name
.getNamespaceURI(), name.getLocalPart());
attribute.setTypeDefinition(attributeDefinition);
XSDParticle particle = factory.createXSDParticle();
particle.setMinOccurs(attributeDescriptor.getMinOccurs());
particle.setMaxOccurs(attributeDescriptor.getMaxOccurs());
particle.setContent(attribute);
attributes.getContents().add(particle);
}
}
// set up fatureType with attributes
XSDParticle contents = factory.createXSDParticle();
contents.setContent(attributes);
definition.setContent(contents);
xsd.getContents().add(definition);
return definition;
}
}