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XPathServices.java
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XPathServices.java
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/*******************************************************************************
* Copyright (c) 2015, 2023 Obeo.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v20.html
*
* Contributors:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.acceleo.query.services;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.eclipse.acceleo.annotations.api.documentation.Documentation;
import org.eclipse.acceleo.annotations.api.documentation.Example;
import org.eclipse.acceleo.annotations.api.documentation.Param;
import org.eclipse.acceleo.query.ast.Call;
import org.eclipse.acceleo.query.runtime.IReadOnlyQueryEnvironment;
import org.eclipse.acceleo.query.runtime.IService;
import org.eclipse.acceleo.query.runtime.IValidationResult;
import org.eclipse.acceleo.query.runtime.impl.AbstractServiceProvider;
import org.eclipse.acceleo.query.runtime.impl.JavaMethodService;
import org.eclipse.acceleo.query.runtime.impl.ValidationServices;
import org.eclipse.acceleo.query.validation.type.EClassifierLiteralType;
import org.eclipse.acceleo.query.validation.type.EClassifierSetLiteralType;
import org.eclipse.acceleo.query.validation.type.EClassifierType;
import org.eclipse.acceleo.query.validation.type.IType;
import org.eclipse.acceleo.query.validation.type.SequenceType;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.EcorePackage;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.EClassImpl.FeatureSubsetSupplier;
import org.eclipse.emf.ecore.resource.Resource;
/**
* Services on {@link EObject}.
*
* @author <a href="mailto:romain.guider@obeo.fr">Romain Guider</a>
*/
@SuppressWarnings({"checkstyle:javadocmethod", "checkstyle:javadoctype" })
public class XPathServices extends AbstractServiceProvider {
/**
* {@link EClass} containment message.
*/
private static final String ONLY_E_CLASS_CAN_BE_CONTAINED_INTO_OTHER_E_CLASSES_NOT_S = "Only EClass can be contained into other EClasses not %s";
/**
* Can't contain directly or indirectly message.
*/
private static final String S_CAN_T_CONTAIN_DIRECTLY_OR_INDIRECTLY_S = "%s can't contain directly or indirectly %s";
/**
* Ancestors {@link IService}.
*
* @author <a href="mailto:yvan.lussaud@obeo.fr">Yvan Lussaud</a>
*/
private static final class AncestorsService extends FilterService {
/**
* Creates a new service instance given a method and an instance.
*
* @param serviceMethod
* the method that realizes the service
* @param serviceInstance
* the instance on which the service must be called
*/
private AncestorsService(Method serviceMethod, Object serviceInstance, boolean forWorkspace) {
super(serviceMethod, serviceInstance, forWorkspace);
}
@Override
public Set<IType> getType(Call call, ValidationServices services, IValidationResult validationResult,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes) {
final Set<IType> result = new LinkedHashSet<IType>();
final Set<EClass> eClasses = services.getEClasses(argTypes.get(0));
if (!eClasses.isEmpty()) {
for (EClass eCls : eClasses) {
if (eCls == EcorePackage.eINSTANCE.getEObject()) {
if (argTypes.size() == 1) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eCls)));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierLiteralType) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, ((EClassifierLiteralType)argTypes.get(1)).getType())));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eClassifier)));
}
} else if (argTypes.size() == 2) {
result.addAll(super.getType(call, services, validationResult, queryEnvironment,
argTypes));
}
} else {
result.addAll(getTypeForSpecificType(services, queryEnvironment, argTypes, eCls));
}
}
} else {
result.add(new SequenceType(queryEnvironment, services.nothing(
ONLY_E_CLASS_CAN_BE_CONTAINED_INTO_OTHER_E_CLASSES_NOT_S, argTypes.get(0))));
}
return result;
}
/**
* Gets the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}.
*
* @param services
* the {@link ValidationServices}
* @param queryEnvironment
* the {@link IReadOnlyQueryEnvironment}
* @param argTypes
* arguments {@link IType}
* @param receiverEClass
* the receiver type can't be {@link EObject} {@link EClass}
* @return the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}
*/
private Set<IType> getTypeForSpecificType(ValidationServices services,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes,
final EClass receiverEClass) {
final Set<IType> result = new LinkedHashSet<IType>();
if (argTypes.size() == 1) {
for (EClass containingEClass : queryEnvironment.getEPackageProvider()
.getAllContainingEClasses(receiverEClass)) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
containingEClass)));
}
if (result.isEmpty()) {
result.add(new SequenceType(queryEnvironment, services.nothing("%s can't be contained",
argTypes.get(0))));
}
} else if (argTypes.size() == 2) {
final Set<IType> filterTypes = new LinkedHashSet<IType>();
if (argTypes.get(1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
filterTypes.add(new EClassifierType(queryEnvironment, eClassifier));
}
} else if (argTypes.get(1) instanceof EClassifierLiteralType) {
filterTypes.add(argTypes.get(1));
} else {
addEObjectEClass(filterTypes, queryEnvironment);
}
for (IType filterType : filterTypes) {
for (EClass containingEClass : queryEnvironment.getEPackageProvider()
.getAllContainingEClasses(receiverEClass)) {
final IType lowerType = services.lower(new EClassifierType(queryEnvironment,
containingEClass), filterType);
if (lowerType != null) {
result.add(new SequenceType(queryEnvironment, lowerType));
}
}
}
if (result.isEmpty()) {
result.add(new SequenceType(queryEnvironment, services.nothing(
S_CAN_T_CONTAIN_DIRECTLY_OR_INDIRECTLY_S, argTypes.get(1), argTypes.get(0))));
}
}
return result;
}
}
/**
* FollowingSiblings {@link IService}.
*
* @author <a href="mailto:yvan.lussaud@obeo.fr">Yvan Lussaud</a>
*/
private static final class FollowingSiblingsService extends FilterService {
/**
* Creates a new service instance given a method and an instance.
*
* @param serviceMethod
* the method that realizes the service
* @param serviceInstance
* the instance on which the service must be called
* @param forWorkspace
* tells if the {@link IService} will be used in a workspace
*/
private FollowingSiblingsService(Method serviceMethod, Object serviceInstance, boolean forWorkspace) {
super(serviceMethod, serviceInstance, forWorkspace);
}
@Override
public Set<IType> getType(Call call, ValidationServices services, IValidationResult validationResult,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes) {
final Set<IType> result = new LinkedHashSet<IType>();
final Set<EClass> eClasses = services.getEClasses(argTypes.get(0));
if (!eClasses.isEmpty()) {
for (EClass eCls : eClasses) {
if (eCls == EcorePackage.eINSTANCE.getEObject()) {
if (argTypes.size() == 1) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eCls)));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierLiteralType) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, ((EClassifierLiteralType)argTypes.get(1)).getType())));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eClassifier)));
}
} else if (argTypes.size() == 2) {
result.addAll(super.getType(call, services, validationResult, queryEnvironment,
argTypes));
}
} else {
result.addAll(getTypeForSpecificType(services, queryEnvironment, argTypes, eCls));
}
}
} else {
result.add(new SequenceType(queryEnvironment, services.nothing(
"Only EClass can have following siblings not %s", argTypes.get(0))));
}
return result;
}
/**
* Gets the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}.
*
* @param services
* the {@link ValidationServices}
* @param queryEnvironment
* the {@link IReadOnlyQueryEnvironment}
* @param argTypes
* arguments {@link IType}
* @param receiverEClass
* the receiver type can't be {@link EObject} {@link EClass}
* @return the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}
*/
private Set<IType> getTypeForSpecificType(ValidationServices services,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes,
final EClass receiverEClass) {
final Set<IType> result = new LinkedHashSet<IType>();
if (argTypes.size() == 1) {
for (EClass followingEClass : queryEnvironment.getEPackageProvider()
.getFollowingSiblingsEClasses(receiverEClass)) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
followingEClass)));
}
// for siblings root of a resource (any EObject)
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
EcorePackage.eINSTANCE.getEObject())));
} else if (argTypes.size() == 2) {
final Set<IType> filterTypes = new LinkedHashSet<IType>();
if (argTypes.get(1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
filterTypes.add(new EClassifierType(queryEnvironment, eClassifier));
}
} else if (argTypes.get(1) instanceof EClassifierLiteralType) {
filterTypes.add(argTypes.get(1));
} else {
addEObjectEClass(filterTypes, queryEnvironment);
}
for (IType filterType : filterTypes) {
for (EClass followingEClass : queryEnvironment.getEPackageProvider()
.getFollowingSiblingsEClasses(receiverEClass)) {
final IType lowerType = services.lower(new EClassifierType(queryEnvironment,
followingEClass), filterType);
if (lowerType != null) {
result.add(new SequenceType(queryEnvironment, lowerType));
}
}
// for siblings root of a resource (filtered EObject)
result.add(new SequenceType(queryEnvironment, services.lower(filterType, filterType)));
}
}
return result;
}
}
/**
* PrecedingSiblings {@link IService}.
*
* @author <a href="mailto:yvan.lussaud@obeo.fr">Yvan Lussaud</a>
*/
private static final class PrecedingSiblingsService extends FilterService {
/**
* Creates a new service instance given a method and an instance.
*
* @param serviceMethod
* the method that realizes the service
* @param serviceInstance
* the instance on which the service must be called
* @param forWorkspace
* tells if the {@link IService} will be used in a workspace
*/
private PrecedingSiblingsService(Method serviceMethod, Object serviceInstance, boolean forWorkspace) {
super(serviceMethod, serviceInstance, forWorkspace);
}
@Override
public Set<IType> getType(Call call, ValidationServices services, IValidationResult validationResult,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes) {
final Set<IType> result = new LinkedHashSet<IType>();
final Set<EClass> eClasses = services.getEClasses(argTypes.get(0));
if (!eClasses.isEmpty()) {
for (EClass eCls : eClasses) {
if (eCls == EcorePackage.eINSTANCE.getEObject()) {
if (argTypes.size() == 1) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eCls)));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierLiteralType) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, ((EClassifierLiteralType)argTypes.get(1)).getType())));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eClassifier)));
}
} else if (argTypes.size() == 2) {
result.addAll(super.getType(call, services, validationResult, queryEnvironment,
argTypes));
}
} else {
result.addAll(getTypeForSpecificType(services, queryEnvironment, argTypes, eCls));
}
}
} else {
result.add(new SequenceType(queryEnvironment, services.nothing(
"Only EClass can have preceding siblings not %s", argTypes.get(0))));
}
return result;
}
/**
* Gets the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}.
*
* @param services
* the {@link ValidationServices}
* @param queryEnvironment
* the {@link IReadOnlyQueryEnvironment}
* @param argTypes
* arguments {@link IType}
* @param receiverEClass
* the receiver type can't be {@link EObject} {@link EClass}
* @return the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}
*/
private Set<IType> getTypeForSpecificType(ValidationServices services,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes,
final EClass receiverEClass) {
final Set<IType> result = new LinkedHashSet<IType>();
if (argTypes.size() == 1) {
for (EClass precedingEClass : queryEnvironment.getEPackageProvider()
.getPrecedingSiblingsEClasses(receiverEClass)) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
precedingEClass)));
}
// for siblings root of a resource (any EObject)
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
EcorePackage.eINSTANCE.getEObject())));
} else if (argTypes.size() == 2) {
final Set<IType> filterTypes = new LinkedHashSet<IType>();
if (argTypes.get(1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
filterTypes.add(new EClassifierType(queryEnvironment, eClassifier));
}
} else if (argTypes.get(1) instanceof EClassifierLiteralType) {
filterTypes.add(argTypes.get(1));
} else {
addEObjectEClass(filterTypes, queryEnvironment);
}
for (IType filterType : filterTypes) {
for (EClass precedingEClass : queryEnvironment.getEPackageProvider()
.getPrecedingSiblingsEClasses(receiverEClass)) {
final IType lowerType = services.lower(new EClassifierType(queryEnvironment,
precedingEClass), filterType);
if (lowerType != null) {
result.add(new SequenceType(queryEnvironment, lowerType));
}
}
// for siblings root of a resource (filtered EObject)
result.add(new SequenceType(queryEnvironment, services.lower(filterType, filterType)));
}
}
return result;
}
}
/**
* Siblings {@link IService}.
*
* @author <a href="mailto:yvan.lussaud@obeo.fr">Yvan Lussaud</a>
*/
private static final class SiblingsService extends FilterService {
/**
* Creates a new service instance given a method and an instance.
*
* @param serviceMethod
* the method that realizes the service
* @param serviceInstance
* the instance on which the service must be called
* @param forWorkspace
* tells if the {@link IService} will be used in a workspace
*/
private SiblingsService(Method serviceMethod, Object serviceInstance, boolean forWorkspace) {
super(serviceMethod, serviceInstance, forWorkspace);
}
@Override
public Set<IType> getType(Call call, ValidationServices services, IValidationResult validationResult,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes) {
final Set<IType> result = new LinkedHashSet<IType>();
final Set<EClass> eClasses = services.getEClasses(argTypes.get(0));
if (!eClasses.isEmpty()) {
for (EClass eCls : eClasses) {
if (eCls == EcorePackage.eINSTANCE.getEObject()) {
if (argTypes.size() == 1) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eCls)));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierLiteralType) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, ((EClassifierLiteralType)argTypes.get(1)).getType())));
} else if (argTypes.size() == 2 && argTypes.get(
1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(
queryEnvironment, eClassifier)));
}
} else if (argTypes.size() == 2) {
result.addAll(super.getType(call, services, validationResult, queryEnvironment,
argTypes));
}
} else {
result.addAll(getTypeForSpecificType(services, queryEnvironment, argTypes, eCls));
}
}
} else {
result.add(new SequenceType(queryEnvironment, services.nothing(
"Only EClass can have siblings not %s", argTypes.get(0))));
}
return result;
}
/**
* Gets the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}.
*
* @param services
* the {@link ValidationServices}
* @param queryEnvironment
* the {@link IReadOnlyQueryEnvironment}
* @param argTypes
* arguments {@link IType}
* @param receiverEClass
* the receiver type can't be {@link EObject} {@link EClass}
* @return the {@link IType} of elements returned by the service when the receiver type is not the
* {@link EObject} {@link EClass}
*/
private Set<IType> getTypeForSpecificType(ValidationServices services,
IReadOnlyQueryEnvironment queryEnvironment, List<IType> argTypes,
final EClass receiverEClass) {
final Set<IType> result = new LinkedHashSet<IType>();
if (argTypes.size() == 1) {
for (EClass siblingEClass : queryEnvironment.getEPackageProvider().getSiblingsEClasses(
receiverEClass)) {
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
siblingEClass)));
}
// for siblings root of a resource (any EObject)
result.add(new SequenceType(queryEnvironment, new EClassifierType(queryEnvironment,
EcorePackage.eINSTANCE.getEObject())));
} else if (argTypes.size() == 2) {
final Set<IType> filterTypes = new LinkedHashSet<IType>();
if (argTypes.get(1) instanceof EClassifierSetLiteralType) {
for (EClassifier eClassifier : ((EClassifierSetLiteralType)argTypes.get(1))
.getEClassifiers()) {
filterTypes.add(new EClassifierType(queryEnvironment, eClassifier));
}
} else if (argTypes.get(1) instanceof EClassifierLiteralType) {
filterTypes.add(argTypes.get(1));
} else {
addEObjectEClass(filterTypes, queryEnvironment);
}
for (IType filterType : filterTypes) {
for (EClass siblingEClass : queryEnvironment.getEPackageProvider().getSiblingsEClasses(
receiverEClass)) {
final IType lowerType = services.lower(new EClassifierType(queryEnvironment,
siblingEClass), filterType);
if (lowerType != null) {
result.add(new SequenceType(queryEnvironment, lowerType));
}
}
// for siblings root of a resource (filtered EObject)
result.add(new SequenceType(queryEnvironment, services.lower(filterType, filterType)));
}
}
return result;
}
}
/**
* The {@link IReadOnlyQueryEnvironment}.
*/
private final IReadOnlyQueryEnvironment queryEnvironment;
/**
* Constructor.
*
* @param queryEnvironment
* the {@link IReadOnlyQueryEnvironment}
*/
public XPathServices(IReadOnlyQueryEnvironment queryEnvironment) {
this.queryEnvironment = queryEnvironment;
}
@Override
protected IService<Method> getService(Method publicMethod, boolean forWorkspace) {
final IService<Method> result;
if ("ancestors".equals(publicMethod.getName())) {
result = new AncestorsService(publicMethod, this, forWorkspace);
} else if ("followingSiblings".equals(publicMethod.getName())) {
result = new FollowingSiblingsService(publicMethod, this, forWorkspace);
} else if ("precedingSiblings".equals(publicMethod.getName())) {
result = new PrecedingSiblingsService(publicMethod, this, forWorkspace);
} else if ("siblings".equals(publicMethod.getName())) {
result = new SiblingsService(publicMethod, this, forWorkspace);
} else {
result = new JavaMethodService(publicMethod, this, forWorkspace);
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the full set of object's ancestors.",
params = {
@Param(name = "self", value = "The EObject we seek the ancestors of")
},
result = "Sequence containing the full set of the receiver's ancestors",
examples = {
@Example(expression = "eClass.ancestors()", result = "Sequence{parentEPackage, grandParentEPackage}")
}
)
// @formatter:on
public List<EObject> ancestors(EObject self) {
// TODO lazy collection + predicate
final List<EObject> result = new ArrayList<EObject>();
EObject container = self.eContainer();
while (container != null) {
result.add(container);
container = container.eContainer();
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's ancestors of the given type.",
params = {
@Param(name = "self", value = "The EObject we seek the ancestors of"),
@Param(name = "filter", value = "The filtering EClass")
},
result = "Sequence containing the set of the receiver's ancestors of the given type",
examples = {
@Example(expression = "eClass.ancestors(ecore::EPackage)", result = "Sequence{parentEPackage, grandParentEPackage}")
}
)
// @formatter:on
public List<EObject> ancestors(EObject self, EClass filter) {
final Set<EClass> filters = new LinkedHashSet<EClass>();
filters.add(filter);
return ancestors(self, filters);
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's ancestors of any given types.",
params = {
@Param(name = "self", value = "The EObject we seek the ancestors of"),
@Param(name = "filters", value = "The set of filtering EClasses")
},
result = "Sequence containing the set of the receiver's ancestors of any given types",
examples = {
@Example(expression = "eClass.ancestors({ecore::EPackage | ecore::EClass})", result = "Sequence{parentEPackage, grandParentEPackage}")
}
)
// @formatter:on
public List<EObject> ancestors(EObject self, Set<EClass> filters) {
// TODO lazy collection + predicate
final List<EObject> result = new ArrayList<EObject>();
EObject container = self.eContainer();
while (container != null) {
if (eIsInstanceOf(container, filters)) {
result.add(container);
}
container = container.eContainer();
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the full set of object's following siblings.",
params = {
@Param(name = "self", value = "The EObject we seek the following siblings of")
},
result = "Sequence containing the full set of the receiver's following siblings",
examples = {
@Example(expression = "eClass3.followingSiblings()", result = "Sequence{eClass4, eClass5}")
}
)
// @formatter:on
public List<EObject> followingSiblings(EObject self) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(self);
if (container != null) {
result = getContentsFrom(container, self);
} else {
result = Collections.emptyList();
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's following siblings of the given type.",
params = {
@Param(name = "self", value = "The EObject we seek the following siblings of"),
@Param(name = "filter", value = "The filtering EClass")
},
result = "Sequence containing the set of the receiver's following siblings of the given type",
examples = {
@Example(expression = "eClass3.followingSiblings(ecore::EClass)", result = "Sequence{eClass4, eClass5}")
}
)
// @formatter:on
public List<EObject> followingSiblings(EObject self, EClass filter) {
final Set<EClass> filters = new LinkedHashSet<EClass>();
filters.add(filter);
return followingSiblings(self, filters);
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's following siblings of any given types.",
params = {
@Param(name = "self", value = "The EObject we seek the following siblings of"),
@Param(name = "filters", value = "The set of filtering EClasses")
},
result = "Sequence containing the set of the receiver's following siblings of any given types",
examples = {
@Example(expression = "eClass3.followingSiblings({ecore::EPackage | ecore::EClass})", result = "Sequence{eClass4, eClass5}")
}
)
// @formatter:on
public List<EObject> followingSiblings(EObject eObject, Set<EClass> filters) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(eObject);
if (container instanceof EObject) {
result = new ArrayList<EObject>();
final EStructuralFeature containingFeature = eObject.eContainingFeature();
final List<EStructuralFeature> followingFeatures = getFollowingFeatures((EObject)container,
containingFeature, filters);
boolean collect = followingFeatures.size() > 0 && followingFeatures.get(0) != containingFeature;
for (EStructuralFeature feature : followingFeatures) {
final Object value = ((EObject)container).eGet(feature);
if (value instanceof Collection<?>) {
for (Object child : (Collection<?>)value) {
if (child == eObject) {
collect = true;
} else if (collect && child instanceof EObject && eIsInstanceOf((EObject)child,
filters)) {
result.add((EObject)child);
}
}
} else if (value == eObject) {
collect = true;
} else if (collect && value instanceof EObject && eIsInstanceOf((EObject)value, filters)) {
result.add((EObject)value);
}
}
} else if (container instanceof Resource) {
result = new ArrayList<EObject>();
for (EObject eObj : getRootsFrom((Resource)container, eObject)) {
if (eIsInstanceOf(eObj, filters)) {
result.add(eObj);
}
}
} else {
result = Collections.emptyList();
}
return result;
}
/**
* Gets the following {@link EStructuralFeature} for the given container and containing feature.
*
* @param container
* the {@link EObject} container
* @param containingFeature
* the containing {@link EStructuralFeature}
* @param filters
* the {@link EClass} filters
* @return the following {@link EStructuralFeature} for the given container and containing feature
*/
private List<EStructuralFeature> getFollowingFeatures(EObject container,
EStructuralFeature containingFeature, Set<EClass> filters) {
final List<EStructuralFeature> result = new ArrayList<EStructuralFeature>();
final Set<EStructuralFeature> filteredFeatures = new LinkedHashSet<EStructuralFeature>();
for (EClass eCls : filters) {
filteredFeatures.addAll(queryEnvironment.getEPackageProvider().getContainingEStructuralFeatures(
eCls));
}
final EStructuralFeature[] containmentFeatures = ((FeatureSubsetSupplier)((EObject)container).eClass()
.getEAllStructuralFeatures()).containments();
boolean collect = false;
for (EStructuralFeature containmentFeature : containmentFeatures) {
if (containmentFeature == containingFeature) {
collect = true;
}
if (collect && filteredFeatures.contains(containmentFeature)) {
result.add(containmentFeature);
}
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the full set of object's preceding siblings.",
params = {
@Param(name = "self", value = "The EObject we seek the preceding siblings of")
},
result = "Sequence containing the full set of the receiver's preceding siblings",
examples = {
@Example(expression = "eClass3.precedingSiblings()", result = "Sequence{eClass1, eClass2}")
}
)
// @formatter:on
public List<EObject> precedingSiblings(EObject self) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(self);
if (container != null) {
result = getContentsUntil(container, self);
} else {
result = Collections.emptyList();
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's preceding siblings of the given type.",
params = {
@Param(name = "self", value = "The EObject we seek the preceding siblings of"),
@Param(name = "filter", value = "The filtering EClass")
},
result = "Sequence containing the set of the receiver's preceding siblings of the given type",
examples = {
@Example(expression = "eClass3.precedingSiblings(ecore::EClass)", result = "Sequence{eClass1, eClass2}")
}
)
// @formatter:on
public List<EObject> precedingSiblings(EObject self, EClass filter) {
final Set<EClass> filters = new LinkedHashSet<EClass>();
filters.add(filter);
return precedingSiblings(self, filters);
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's preceding siblings of any given types.",
params = {
@Param(name = "self", value = "The EObject we seek the preceding siblings of"),
@Param(name = "filters", value = "The set of filtering EClasses")
},
result = "Sequence containing the set of the receiver's preceding siblings of any given types",
examples = {
@Example(expression = "eClass3.precedingSiblings({ecore::EPackage | ecore::EClass})", result = "Sequence{eClass1, eClass2}")
}
)
// @formatter:on
public List<EObject> precedingSiblings(EObject eObject, Set<EClass> filters) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(eObject);
if (container instanceof EObject) {
result = new ArrayList<EObject>();
final EStructuralFeature containingFeature = eObject.eContainingFeature();
final List<EStructuralFeature> precedingFeatures = getPrecedingFeatures((EObject)container,
containingFeature, filters);
finish: for (EStructuralFeature feature : precedingFeatures) {
final Object value = ((EObject)container).eGet(feature);
if (value instanceof Collection<?>) {
for (Object child : (Collection<?>)value) {
if (child == eObject) {
break finish;
} else if (child instanceof EObject && eIsInstanceOf((EObject)child, filters)) {
result.add((EObject)child);
}
}
} else if (value == eObject) {
break finish;
} else if (value instanceof EObject && eIsInstanceOf((EObject)value, filters)) {
result.add((EObject)value);
}
}
} else if (container instanceof Resource) {
result = new ArrayList<EObject>();
for (EObject eObj : getRootsUntil((Resource)container, eObject)) {
if (eIsInstanceOf(eObj, filters)) {
result.add(eObj);
}
}
} else {
result = Collections.emptyList();
}
return result;
}
/**
* Gets the preceding {@link EStructuralFeature} for the given container and containing feature.
*
* @param container
* the {@link EObject} container
* @param containingFeature
* the containing {@link EStructuralFeature}
* @param filters
* the {@link EClass} filters
* @return the preceding {@link EStructuralFeature} for the given container and containing feature
*/
private List<EStructuralFeature> getPrecedingFeatures(EObject container,
EStructuralFeature containingFeature, Set<EClass> filters) {
final List<EStructuralFeature> result = new ArrayList<EStructuralFeature>();
final Set<EStructuralFeature> filteredFeatures = new LinkedHashSet<EStructuralFeature>();
for (EClass eCls : filters) {
filteredFeatures.addAll(queryEnvironment.getEPackageProvider().getContainingEStructuralFeatures(
eCls));
}
final EStructuralFeature[] containmentFeatures = ((FeatureSubsetSupplier)((EObject)container).eClass()
.getEAllStructuralFeatures()).containments();
for (EStructuralFeature containmentFeature : containmentFeatures) {
if (filteredFeatures.contains(containmentFeature)) {
result.add(containmentFeature);
}
if (containmentFeature == containingFeature) {
break;
}
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the full set of object's siblings.",
params = {
@Param(name = "self", value = "The EObject we seek the siblings of")
},
result = "Sequence containing the full set of the receiver's siblings",
examples = {
@Example(expression = "eClass3.siblings()", result = "Sequence{eClass1, eClass2, eClass4, eClass5}")
}
)
// @formatter:on
public List<EObject> siblings(EObject self) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(self);
if (container != null) {
result = getContentsExcluding(container, self);
} else {
result = Collections.emptyList();
}
return result;
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's siblings of the given type.",
params = {
@Param(name = "self", value = "The EObject we seek the siblings of"),
@Param(name = "filter", value = "The filtering EClass")
},
result = "Sequence containing the set of the receiver's siblings of the given type",
examples = {
@Example(expression = "eClass3.siblings(ecore::EClass)", result = "Sequence{eClass1, eClass2, eClass4, eClass5}")
}
)
// @formatter:on
public List<EObject> siblings(final EObject self, final EClass filter) {
final Set<EClass> filters = new LinkedHashSet<EClass>();
filters.add(filter);
return siblings(self, filters);
}
// @formatter:off
@Documentation(
value = "Returns a Sequence containing the set of object's siblings of any given types.",
params = {
@Param(name = "self", value = "The EObject we seek the siblings of"),
@Param(name = "filters", value = "The set of filtering EClasses")
},
result = "Sequence containing the set of the receiver's siblings of any given types",
examples = {
@Example(expression = "eClass3.siblings({ecore::EPackage | ecore::EClass})", result = "Sequence{eClass1, eClass2, eClass1, eClass2}")
}
)
// @formatter:on
public List<EObject> siblings(final EObject eObject, final Set<EClass> filters) {
// TODO lazy collection
final List<EObject> result;
Object container = getContainer(eObject);
if (container instanceof EObject) {
result = new ArrayList<EObject>();
final EStructuralFeature containingFeature = eObject.eContainingFeature();
final List<EStructuralFeature> features = getFeatures((EObject)container, containingFeature,
filters);
for (EStructuralFeature containmentFeature : features) {
final Object value = ((EObject)container).eGet(containmentFeature);
if (value instanceof Collection<?>) {
for (Object child : (Collection<?>)value) {
if (child != eObject && child instanceof EObject && eIsInstanceOf((EObject)child,
filters)) {
result.add((EObject)child);
}
}
} else if (value != eObject && value instanceof EObject && eIsInstanceOf((EObject)value,
filters)) {
result.add((EObject)value);
}
}