package org.geotools.data.efeature.internal;
import static org.geotools.data.efeature.internal.ESimpleFeatureAdapter.create;
import java.lang.ref.WeakReference;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.geotools.data.Transaction;
import org.geotools.data.efeature.EFeature;
import org.geotools.data.efeature.EFeatureAttributeInfo;
import org.geotools.data.efeature.EFeatureConstants;
import org.geotools.data.efeature.EFeatureContext;
import org.geotools.data.efeature.EFeatureHints;
import org.geotools.data.efeature.EFeatureIDFactory;
import org.geotools.data.efeature.EFeatureInfo;
import org.geotools.data.efeature.EFeaturePackage;
import org.geotools.data.efeature.EFeatureProperty;
import org.geotools.data.efeature.EFeatureReader;
import org.geotools.data.efeature.EFeatureStatus;
import org.geotools.data.efeature.EFeatureUtils;
import org.geotools.data.efeature.ESimpleFeature;
import org.geotools.data.efeature.impl.EFeatureImpl;
import org.geotools.data.efeature.util.EFeatureAttributeList;
import org.geotools.data.efeature.util.EFeatureGeometryList;
import org.opengis.feature.Feature;
import org.opengis.feature.Property;
import com.vividsolutions.jts.geom.Geometry;
/**
* This is an internal implementation of the {@link EFeature} contract.
* <p>
* It does not implement the {@link EFeature} interfaces, just the interface
* methods. This allows for a minimal base class common for both
* {@link EFeatureImpl} and {@link EFeatureDelegate} classes.
* </p>
*
* @author kengu - 29. mai 2011
*
* @see {@link EFeature} - the interface which this class is a minimal base for
* @see {@link EFeatureImpl} - default implementation of {@link EFeature}. All models
* which extend the {@link EFeature} EMF model implements this class.
* @see {@link EFeatureDelegate} - a class which is able to delegate {@link EFeature} delegate
*
* @source $URL$
*/
public class EFeatureInternal {
/**
* The default value of the '{@link #getSRID() <em>SRID</em>}' attribute.
*/
protected static final String SRID_EDEFAULT = EFeatureConstants.DEFAULT_SRID;
/**
* The default value of the '{@link #getData(Transaction) <em>Data</em>}' attribute.
*/
protected static final Feature DATA_EDEFAULT = EFeatureConstants.DEFAULT_FEATURE;
/**
* The default value of the '{@link #isSimple() <em>Simple</em>}' attribute.
*/
protected static final boolean SIMPLE_EDEFAULT = EFeatureConstants.DEFAULT_IS_SIMPLE;
/**
* The default value of the '{@link #getDefault() <em>Default</em>}' attribute.
*/
protected static final String DEFAULT_EDEFAULT = EFeatureConstants.DEFAULT_GEOMETRY_NAME;
/**
* The default value of the '{@link #getStructure() <em>Structure</em>}' attribute.
*/
protected static final EFeatureInfo STRUCTURE_EDEFAULT = EFeatureConstants.DEFAULT_FEATURE_STRUCTURE;
/**
* Current {@link EFeature} ID.
*/
protected String eID;
/**
* The cached value of the '{@link #getStructure() <em>Structure</em>}' attribute.
*/
protected EFeatureInfo eStructure = STRUCTURE_EDEFAULT;
/**
* Cached {@link EObject} which this delegates to.
* <p>
* It is cached using a weak reference which allows cyclic reference between this and the
* implementation.
*/
protected WeakReference<EFeature> eImpl;
/**
* Flag indicating that the {@link EFeature#getID EFeature ID}
* holder check is not performed.
*/
protected boolean doIDHolderCheck = true;
/**
* Flag indicating that the {@link EFeature#getID EFeature ID}
* holder check is in progress. If {@link #getID()} is
* called when this flag is <code>true</code>, then this is the ID
* holder. This follows from the fact that the
* {@link #eImpl() actual implementation} is delegating its
* {@link EAttribute ID attribute} to {@link #getID() this}.
*/
protected boolean isIDHolderChecking = false;
/**
* Flag indicating that the {@link EFeature#getID()} value is hold by this.
*/
protected boolean isIDHolder = false;
/**
* Cached list of to {@link EFeatureProperty} instances in same order
* as {@link EAttribute}s in current {@link #eStructure EFeatureInfo}.
*/
protected List<EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature>> eProperties;
/**
* Cached property name to {@link EFeatureProperty} instances map.
*/
protected Map<String, EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature>> ePropertyMap;
/**
* Flag storing current detached values state. Since {@link #eHints} is mutable,
* current state change must be cached in order to track actual changes made to hints.
*/
protected boolean eValuesDetached = false;
/**
* Cached set of validated {@link EFeatureInfo#eUID}s
*/
protected static Map<EClass,Set<Long>> eValidatedClassMap =
Collections.synchronizedMap(new WeakHashMap<EClass,Set<Long>>());
/**
* Transaction used when not explicitly specified
*/
protected Transaction eTx = Transaction.AUTO_COMMIT;
/**
* Cached {@link EFeatureHints}
*/
protected EFeatureHints eHints;
/**
* Cached {@link ESimpleFeature} singleton instance.
* <p>
* This is used {@link ThreadLocal thread local} to allow
* multiple threads to work on {@link ESimpleFeature}
* singletons without concurrent modification problems.
* </p>
* @see {@link EFeatureHints#EFEATURE_SINGLETON_FEATURES}
*/
protected static ThreadLocal<ESimpleFeatureInternal>
eSingleton = new ThreadLocal<ESimpleFeatureInternal>();
// -----------------------------------------------------
// Constructors
// -----------------------------------------------------
/**
* Context-unaware constructor.
* <p>
* Use this constructor when the {@link EFeatureContext} is unknown.
* <p>
* The implementation is weakly referenced to allow garbage collection
* when the implementation is no longer referenced.
* <p>
* {@link EFeatureContext Context} and {@link EFeatureInfo structure} must
* be set before it can be read by {@link EFeatureReader}.
* </p>
* @param eImpl - {@link EObject} instance which implements {@link EFeature}.
*
* @see {@link EFeatureContextHelper} - read more about the context startup problem.
* @see {@link #setStructure(EFeatureInfo)}Â -Â set {@link EFeatureInfo#eContext() context}
* and {@link EFeatureInfo structure}.
*
*/
public EFeatureInternal(EFeature eImpl) {
this(eInternalContext(eImpl),eImpl);
}
/**
* Auto-configuring structure constructor.
* <p>
* This constructor builds the {@link EFeatureInfo structure}
* from given {@link EObject} instance using EMF reflection.
* <p>
* <b>Note</b>: The constructor verifies the structure.
* If invalid, a {@link IllegalArgumentException} is thrown.
* </p>
* @param eContext - the {@link EFeatureContext} which this belongs
* @param eImpl - {@link EObject} instance which implements {@link EFeature}.
* @throws IllegalArgumentException If the {@link EFeatureInfo structure} of this feature
* {@link EFeatureInfo#validate(EPackage, EClass) fails to validate}.
*
*/
public EFeatureInternal(EFeatureContext eContext, EFeature eImpl)
throws IllegalArgumentException {
//
// Build EFeature structure from EObject instance
//
this(EFeatureInfo.create(eContext, eImpl, new EFeatureHints()), eImpl, null);
}
/**
* Explicit-configuring constructor.
* <p>
* <b>Note</b>: This constructor verifies the structure.
* If invalid, a {@link IllegalArgumentException} is thrown.
* </p>
* @param eStructure - {@link EFeatureInfo structure} instance.
* @param eImpl - {@link EObject} instance which implements {@link EFeature}.
* @param eHints - {@link EFeatureHints} instance. If <code>null</code>,
* {@link EFeatureInfo#eHints() structure hints} is used.
* @throws IllegalArgumentException If the {@link EFeatureInfo structure} of this feature
* {@link EFeatureInfo#validate(EPackage, EClass) fails to validate}.
*/
public EFeatureInternal(EFeatureInfo eStructure, EFeature eImpl, EFeatureHints eHints)
throws IllegalArgumentException {
//
// Cache weak reference to implementation
//
this.eImpl = new WeakReference<EFeature>(eImpl);
//
// Copy structure hints
//
this.eHints = (eHints==null ? new EFeatureHints(eStructure.eHints()) : eHints);
//
// Set structure
//
setStructure(eStructure);
}
// -----------------------------------------------------
// EFeature implementation
// -----------------------------------------------------
public String getID() {
//
// -----------------------------------------------------
// Some EMF GenModel Feature delegating pattern
// choices (f.ex. 'None') will result in recursive
// calls to from EFeature#getID() to
// EFeatureInternal#getID() because of the dynamic
// implementation of eGet(EStructuralFeature) methods.
//
// This method implements re-entry guards which
// detects the situation, indication that the EFeature
// implementation is abstract, delegating the storage
// of the ID value to this EFeatureInternal instance
// (hence the 'ID holder' check and flags)
// -----------------------------------------------------
//
// Verify current state
//
verify();
//
// Is checking if this is the ID holder?
//
if(isIDHolderChecking) {
//
// The re-entry implies that this is the ID holder
//
isIDHolder = true;
}
//
// Get ID held by this?
//
if(isIDHolder)
{
return eID;
}
//
// ------------------------------------
// Enter "Check if ID Holder" mode?
// ------------------------------------
// This is only done once per instance
//
else if(doIDHolderCheck) {
//
// --------------------------------
// If this method is called
// recursively, then this must be
// an ID holder.
// --------------------------------
//
// Enable recursive call detection
//
isIDHolderChecking = true;
}
//
// Implementation holds the ID value. Get EFeature ID attribute.
//
EAttribute eAttribute = getStructure().eIDAttribute();
//
// Get current EFeature ID (will recurse into this method if ID holder)
//
eID = (String)eImpl().eGet(eAttribute);
//
// Reset ID holder check flags?
//
if(doIDHolderCheck) {
//
// Run check only once
//
doIDHolderCheck = false;
//
// Notify that the check is completed
//
isIDHolderChecking = false;
}
//
// Finished
//
return (eID!=null ? eID.toString() : null);
}
public void setID(String eNewID) {
//
// Forward
//
eSetID(eNewID, true);
}
public String getSRID() {
return eStructure==null ? SRID_EDEFAULT : getStructure().getSRID();
}
public void setSRID(String newSRID) {
verify();
//
// Prepare change delta
//
String oldSRID = getSRID();
// Is changed?
//
if (newSRID != oldSRID) {
//
// Update SRID for structure.
// Current bounds is invalidated
// by callback to eStructureInfoListener
//
getStructure().setSRID(newSRID);
//
// Forward
//
eNotify(EFeaturePackage.EFEATURE__SRID, oldSRID, newSRID);
}
}
public ESimpleFeature getData(Transaction transaction) {
//
// Do sanity checks
//
verify();
//
// Get ESimpleFeature instance
//
return eSimpleFeature(this,eHints);
}
public ESimpleFeature setData(Feature newData, Transaction transaction) {
//
// Sanity checks
//
verify();
if (newData == null) {
throw new NullPointerException("Data can not be set to null");
}
//
// Prepare adaption of new data to given structure
//
ESimpleFeatureAdapter eAdapter = create(eStructure, eImpl(), newData);
//
// Adapt data to ESimpleFeature
// (EMF notifications are raised if anything changed)
//
if(eHints.eValuesDetached()) {
return eAdapter.eAdapt(eStructure, eSimpleFeature(this,eHints), eTx);
} else {
return eAdapter.eAdapt(eStructure, eImpl(), eTx);
}
}
public String getDefault() {
verify();
return getStructure().eGetDefaultGeometryName();
}
public void setDefault(String newDefault) {
verify();
String oldDefault = getDefault();
getStructure().eSetDefaultGeometryName(newDefault);
eNotify(EFeaturePackage.EFEATURE__DEFAULT, oldDefault, newDefault);
}
public EFeatureInfo getStructure() {
return eStructure;
}
public boolean setStructure(EFeatureInfo eNewStructure) {
//
// Do sanity checks
//
if(eNewStructure==null) {
throw new NullPointerException("EFeatureInfo structure can not be null");
}
//
// Calculate change
//
boolean bFlag = this.eStructure!=eNewStructure;
//
// Is changed
//
if(bFlag) {
//
// Cache reference to old structure
//
EFeatureInfo eOldStructure = this.eStructure;
//
// ------------------------------------------------------
// Validate implementation against structure?
// ------------------------------------------------------
// This is an optimization exploiting the fact that
// structures are immutable once created, and that
// each structure can thus be uniquely identified
// by a unique ID. It is therefore only required to
// validate this implementation against each unique
// structure once.
//
if(!eNewStructure.eEqualTo(eOldStructure)) {
validate(eNewStructure, eImpl());
}
//
// Is valid, initialize this instance
//
this.eStructure = eNewStructure;
//
// Reset id information, forcing ID holder checks
//
eInitID();
//
// Reset property collections
//
this.eProperties = null;
this.ePropertyMap = null;
//
// Tell listeners in old structure about the change?
//
if(eOldStructure!=null) {
eOldStructure.eNotify(this,
EFeaturePackage.EFEATURE__STRUCTURE,
eOldStructure, eNewStructure);
}
}
//
// Finished
//
return bFlag;
}
public <V> EFeatureAttributeList<V> getAttributeList(Class<V> valueType) {
verify();
return new EFeatureAttributeList<V>(getPropertyList(valueType), valueType);
}
public <V extends Geometry> EFeatureGeometryList<V> getGeometryList(Class<V> valueType) {
verify();
return new EFeatureGeometryList<V>(getPropertyList(valueType), valueType);
}
// -----------------------------------------------------
// EFeatureInternal methods
// -----------------------------------------------------
public void enter(Transaction transaction) {
this.eTx = transaction;
}
public void leave() {
this.eTx = Transaction.AUTO_COMMIT;
}
public EFeatureHints eHints() {
return eHints;
}
public void eReplace(EFeatureHints eHints, boolean eSetInitDetachedValues) {
//
// Verify state
//
if(eStructure==null) {
throw new IllegalStateException("EFeatureInternal is not created");
}
//
// Replace hints
//
this.eHints = eHints;
//
// Discover ID? (only possible added to resource and not a proxy)
//
if( !(eImpl().eResource()==null || eImpl().eIsProxy()) ) {
//
// Structure not change (eID was not reset)
//
eInitID();
//
// Get EFeature ID (assignment is done by method)
//
getID();
}
//
// Tell all EFeatureProperty instances to initialize detached values?
//
if(eSetInitDetachedValues) eSetInitDetachedValues();
}
public void eReplace(EFeatureInfo eStructure, EFeature eImpl,
EFeatureHints eHints, boolean eSetInitDetachedValues) {
//
// Replace weak reference?
//
if(this.eImpl.get()!=eImpl) {
this.eImpl = new WeakReference<EFeature>(eImpl);
}
//
// Replace hints
//
this.eHints = eHints;
//
// Discover ID? (only possible added to resource and not a proxy)
//
if( !(setStructure(eStructure) || eImpl.eResource()==null || eImpl.eIsProxy()) ) {
//
// Structure not change (eID was not reset)
//
eInitID();
//
// Get EFeature ID (assignment is done by method)
//
getID();
}
//
// Tell all EFeatureProperty instances to initialize detached values?
//
if(eSetInitDetachedValues) eSetInitDetachedValues();
}
public String eSetID(String eNewID, boolean eSetUsage) {
//
// Verify current state
//
verify();
//
// Tell ID factory of ID usage?
//
if(eSetUsage) {
//
// Get ID factory
//
EFeatureIDFactory eIDFactory = getStructure().eContext().eIDFactory();
//
// -------------------------------------------------------
// Notify ID usage to factory?
// -------------------------------------------------------
// This is part of the context startup problem solution.
// When constructing EFeatures from XMI, the context is
// unknown. This comes from the fact that values are
// serialized before instances are added to the resource
// (context). Therefore, a internal context is used
// instead. This internal context should not not create
// IDs, since IDs only have meaning in the context that
// that they belong. The ID factory in the internal
// context does therefore not support creation and
// usage of IDs (throws OperationUnsupportedException).
//
if(!(eIDFactory instanceof EFeatureVoidIDFactory)) {
//
// Tell ID factory of ID usage, a new ID is returned if not unique
//
eNewID = eIDFactory.useID(eImpl(),eNewID);
}
}
//
// Is ID held by this?
//
if(isIDHolder)
{
//
// Cache old for later use
//
String eOldID = eID;
//
// Cache ID in this
//
eID = eNewID;
//
// Notify?
//
eNotify(EFeaturePackage.EFEATURE__ID, eOldID, eNewID);
}
else {
//
// Implementation holds the ID value. Get EFeature ID attribute.
//
EAttribute eAttribute = getStructure().eIDAttribute();
//
// Since the implementation holds the ID value, the
// the eAttribute must be changeable.
//
if(!eAttribute.isChangeable()) {
throw new IllegalStateException("EAttribute must be " +
"changeable when the eImpl() is the " +
"ID holder.");
}
//
// Update ID attribute value
//
eImpl().eSet(eAttribute,eNewID);
}
//
// Finished
//
return eNewID;
}
// -----------------------------------------------------
// Public static helper methods
// -----------------------------------------------------
public static final EFeatureInternal eInternal(EFeatureInfo eStructure,
EObject eObject) throws IllegalArgumentException {
if(eObject instanceof EFeatureInternal) {
return (EFeatureInternal)eObject;
} else if(eObject instanceof EFeatureImpl) {
return ((EFeatureImpl)eObject).eInternal();
} else if(eObject instanceof EFeatureDelegate) {
return ((EFeatureDelegate)eObject).eInternal();
}
throw new IllegalArgumentException("EObject " + eObject + " does not implement EFeature");
}
// -----------------------------------------------------
// Protected helper methods
// -----------------------------------------------------
/**
* Reset ID information, forcing ID holder checks
*/
protected void eInitID() {
eID = null;
doIDHolderCheck = true;
isIDHolder = false;
isIDHolderChecking = false;
}
// /**
// * Set {@link EFeatureHints} instance.
// * @param eHints - new {@link EFeatureHints} instance.
// * @return <code>true</code> if {@link EFeatureHints#EFEATURE_VALUES_DETACHED} has changed
// */
// protected boolean eSetHints(EFeatureHints eHints) {
// //
// // Check if hint is changed
// //
// boolean bFlag = eHints.eValuesDetached()!=eValuesDetached;
// //
// // Replace hints
// //
// this.eHints = eHints;
// //
// // Set flag tracking changes to EFEATURE_VALUES_DETACHED flag
// //
// eValuesDetached = eHints.eValuesDetached();
// //
// // Finished
// //
// return bFlag;
// }
protected void eSetInitDetachedValues() {
if(eProperties!=null) {
for(EFeaturePropertyDelegate<?, ?, ?> it : eProperties) {
it.eSetInitDetachedValues();
}
}
}
/**
* Verify that state is available
*/
protected void verify() throws IllegalStateException
{
if(eStructure==null)
throw new IllegalStateException(this + " is not valid. " +
"Please specify the structure.");
}
/**
* Get {@link InternalEObject} instance containing {@link EFeature} data.
* @return a {@link InternalEObject} instance.
* @throws NullPointerException If garbage collected (is weakly referenced)
*/
protected InternalEObject eImpl() throws NullPointerException {
InternalEObject eObject = (InternalEObject)eImpl.get();
if(eObject instanceof EFeatureDelegate) {
eObject = ((EFeatureDelegate)eObject).eImpl();
}
if (eObject == null) {
throw (NullPointerException)(new NullPointerException("EFeature implementation "
+ eStructure.eClassName() + " is finalized (garbage collected).")).fillInStackTrace();
}
return eObject;
}
/**
* Get {@link InternalEObject} instance implementing {@link EFeature} data.
* @return a {@link EFeature} instance.
* @throws NullPointerException If garbage collected (is weakly referenced)
*/
protected InternalEObject eFeature() throws NullPointerException {
InternalEObject eObject = (InternalEObject)this.eImpl.get();
if (eObject == null) {
throw (NullPointerException)(new NullPointerException("EFeature implementation "
+ eStructure.eClassName() + " is finalized (garbage collected).")).fillInStackTrace();
}
return eObject;
}
protected void eNotify(int feature, Object oldValue, Object newValue) {
eNotify(eImpl(), feature, oldValue, newValue);
}
/**
* Get current list of {@link EFeatureProperty} instances.
* <p>
* This method implements lazy creation of {@link EFeatureProperty} instances.
* </p>
*
* @return list of {@link EFeatureProperty} instances.
*/
protected List<EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature>> getProperties() {
if (eProperties == null) {
//
// Get all attributes in structure
//
List<EFeatureAttributeInfo> eList = getStructure().eGetAttributeInfoList(true);
//
// Initialize map
//
eProperties = EFeatureUtils.newList(eList.size());
//
// Loop over all attributes
//
for (EFeatureAttributeInfo it : eList) {
EAttribute eAttribute = it.eAttribute();
Class<?> type = eAttribute.getEAttributeType().getInstanceClass();
eProperties.add(newProperty(this, it.eName(), type));
}
}
return eProperties;
}
/**
* Get {@link EFeatureProperty} name to instances mappin.
* <p>
* This method implements lazy creation of instance map.
* </p>
*
* @return map of {@link EFeatureProperty} instances.
*/
protected Map<String, ? extends EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature>> getPropertyMap() {
if (ePropertyMap == null) {
//
// Get all properties in structure
//
List<EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature>>
eList = getProperties();
//
// Initialize map
//
ePropertyMap = EFeatureUtils.newMap(eList.size());
//
// Loop over all attributes
//
for (EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature> it : eList) {
String eName = it.getName();
ePropertyMap.put(eName, it);
}
}
return ePropertyMap;
}
/**
* Get list of {@link EFeatureProperty} instances filtered on value type.
* <p>
* This method implements lazy creation of {@link EFeatureProperty} instances. After creation,
* the instances are cached in {@link #ePropertyMap}
* </p>
*
* @return list of {@link EFeatureProperty} instances.
*/
@SuppressWarnings("unchecked")
protected <V> List<? extends EFeatureProperty<V, Property>> getPropertyList(Class<V> type) {
//
// Initialize
//
Collection<? extends EFeatureProperty<?, ? extends Property>> eList = getProperties();
List<EFeatureProperty<V, Property>> eSelected = EFeatureUtils.newList(eList.size());
//
// Select EFeatureProperty instances with correct value type
//
for (EFeatureProperty<?, ? extends Property> it : eList) {
//
// Has correct value type?
//
if (type.isAssignableFrom(it.getValueType())) {
eSelected.add((EFeatureProperty<V, Property>) it);
}
}
//
// Finished selection
//
return eSelected;
}
// -----------------------------------------------------
// Static helper methods
// -----------------------------------------------------
protected static void eNotify(InternalEObject eObject, int feature, Object oldValue, Object newValue) {
if (eObject.eNotificationRequired()) {
eObject.eNotify(
new ENotificationImpl(eObject, Notification.SET,
feature, oldValue, newValue));
}
}
/**
* Get a {@link ESimpleFeature} instance.
* <p>
* This method decides from inspection of
* {@link EFeatureInfo#eHints()} if a new instance
* or the singleton instance should be returned
* </p>
* @param eInternal EFeatureInternal that contains the ESimpleFeature data
* @return a {@link ESimpleFeature} instance
*/
protected static ESimpleFeature eSimpleFeature(EFeatureInternal eInternal, EFeatureHints eHints) {
//
// Prepare
//
ESimpleFeatureInternal eData = null;
//
// Is instance singleton?
//
if(eHints.eSingletonFeatures()) {
//
// Get singleton instance
//
eData = eSingleton.get();
//
// Create new singleton instance?
//
if(eData==null || eData.isReleased()) {
//
// Create instance
//
eData = new ESimpleFeatureInternal(eInternal);
//
// Update thread local instance
//
eSingleton.set(eData);
}
//
// else, set internal implementation
//
else eData.eReplace(eInternal);
} else {
//
// Create new instance
//
eData = new ESimpleFeatureInternal(eInternal);
}
//
// Finished
//
return eData;
}
protected static final EFeatureContext eInternalContext(EFeature eImpl) {
return EFeatureContextHelper.eContext(eImpl);
}
protected static final void validate(EFeatureInfo eStructure, EObject eObject)
throws IllegalArgumentException {
//
// Synchronize multiple threads access to map
//
synchronized(eValidatedClassMap) {
//
// Prepare
//
EClass eClass = eObject.eClass();
EPackage ePackage = eClass.getEPackage();
//
// Get structures already verified for implementing class
//
Set<Long> eValidSet = eValidatedClassMap.get(eClass);
//
// Found no validated structures?
//
if( eValidSet == null) {
eValidSet = new HashSet<Long>();
eValidatedClassMap.put(eClass, eValidSet);
}
if( !eValidSet.contains(eStructure.eUID())) {
//
// Get parent class?
//
EClass eParent = null;
if (!eStructure.isRoot()) {
eParent = EFeatureUtils.eGetContainingClass(eObject);
}
//
// Validate structure against EObject instance EClass
//
EFeatureStatus s;
if (!(s = eStructure.validate(ePackage, eParent)).isSuccess()) {
throw new IllegalArgumentException(s.getMessage(), s.getCause());
}
//
// Add to verified structures
//
eValidSet.add(eStructure.eUID());
}
}
}
@SuppressWarnings("unchecked")
protected static EFeaturePropertyDelegate<?, ? extends Property, ? extends EStructuralFeature> newProperty(
EFeatureInternal eInternal, String eName, Class<?> type) {
if (Geometry.class.isAssignableFrom(type)) {
return newGeometry(eInternal, eName, (Class<? extends Geometry>)type);
}
return newAttribute(eInternal, eName, type);
}
protected static <V> EFeatureAttributeDelegate<V> newAttribute(EFeatureInternal eInternal, String eName, Class<V> type) {
return new EFeatureAttributeDelegate<V>(eInternal, eName, type);
}
protected static <V extends Geometry> EFeatureGeometryDelegate<V> newGeometry(
EFeatureInternal eInternal, String eName, Class<V> type) {
return new EFeatureGeometryDelegate<V>(eInternal, eName, type);
}
}