| /******************************************************************************* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| ******************************************************************************/ |
| package org.apache.olingo.odata2.core.edm; |
| |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.olingo.odata2.api.edm.Edm; |
| import org.apache.olingo.odata2.api.edm.EdmAssociation; |
| import org.apache.olingo.odata2.api.edm.EdmComplexType; |
| import org.apache.olingo.odata2.api.edm.EdmEntityContainer; |
| import org.apache.olingo.odata2.api.edm.EdmEntitySet; |
| import org.apache.olingo.odata2.api.edm.EdmEntityType; |
| import org.apache.olingo.odata2.api.edm.EdmException; |
| import org.apache.olingo.odata2.api.edm.EdmFunctionImport; |
| import org.apache.olingo.odata2.api.edm.EdmServiceMetadata; |
| import org.apache.olingo.odata2.api.edm.FullQualifiedName; |
| import org.apache.olingo.odata2.api.exception.ODataException; |
| |
| /** |
| * |
| */ |
| public abstract class EdmImpl implements Edm { |
| |
| private Map<String, EdmEntityContainer> edmEntityContainers; |
| private Map<FullQualifiedName, EdmEntityType> edmEntityTypes; |
| private Map<FullQualifiedName, EdmComplexType> edmComplexTypes; |
| private Map<FullQualifiedName, EdmAssociation> edmAssociations; |
| private Map<String, String> aliasToNamespaceInfo; |
| private List<EdmEntitySet> edmEntitySets; |
| private List<EdmFunctionImport> edmFunctionImports; |
| |
| protected EdmServiceMetadata edmServiceMetadata; |
| |
| public EdmImpl(final EdmServiceMetadata edmServiceMetadata) { |
| edmEntityContainers = new HashMap<String, EdmEntityContainer>(); |
| edmEntityTypes = new HashMap<FullQualifiedName, EdmEntityType>(); |
| edmComplexTypes = new HashMap<FullQualifiedName, EdmComplexType>(); |
| edmAssociations = new HashMap<FullQualifiedName, EdmAssociation>(); |
| this.edmServiceMetadata = edmServiceMetadata; |
| } |
| |
| @Override |
| public EdmEntityContainer getEntityContainer(final String name) throws EdmException { |
| if (edmEntityContainers.containsKey(name)) { |
| return edmEntityContainers.get(name); |
| } |
| |
| EdmEntityContainer edmEntityContainer = null; |
| |
| try { |
| edmEntityContainer = createEntityContainer(name); |
| if (edmEntityContainer != null) { |
| if (name == null && edmEntityContainers.containsKey(edmEntityContainer.getName())) { |
| // ensure that the same default entity container is stored in the HashMap under null and its name |
| edmEntityContainer = edmEntityContainers.get(edmEntityContainer.getName()); |
| edmEntityContainers.put(name, edmEntityContainer); |
| } else if (edmEntityContainers.containsKey(null) && edmEntityContainers.get(null) != null |
| && name.equals(edmEntityContainers.get(null).getName())) { |
| // ensure that the same default entity container is stored in the HashMap under null and its name |
| edmEntityContainer = edmEntityContainers.get(null); |
| edmEntityContainers.put(name, edmEntityContainer); |
| } else { |
| edmEntityContainers.put(name, edmEntityContainer); |
| } |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| |
| return edmEntityContainer; |
| } |
| |
| @Override |
| public EdmEntityType getEntityType(final String namespaceOrAlias, final String name) throws EdmException { |
| String finalNamespace = getNamespaceForAlias(namespaceOrAlias); |
| |
| FullQualifiedName fqName = new FullQualifiedName(finalNamespace, name); |
| if (edmEntityTypes.containsKey(fqName)) { |
| return edmEntityTypes.get(fqName); |
| } |
| |
| EdmEntityType edmEntityType = null; |
| |
| try { |
| edmEntityType = createEntityType(fqName); |
| if (edmEntityType != null) { |
| edmEntityTypes.put(fqName, edmEntityType); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| |
| return edmEntityType; |
| } |
| |
| private String getNamespaceForAlias(final String namespaceOrAlias) throws EdmException { |
| if (aliasToNamespaceInfo == null) { |
| try { |
| aliasToNamespaceInfo = createAliasToNamespaceInfo(); |
| if (aliasToNamespaceInfo == null) { |
| aliasToNamespaceInfo = new HashMap<String, String>(); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| } |
| String namespace = aliasToNamespaceInfo.get(namespaceOrAlias); |
| // If not contained in info it must be a namespace |
| if (namespace == null) { |
| namespace = namespaceOrAlias; |
| } |
| return namespace; |
| } |
| |
| @Override |
| public EdmComplexType getComplexType(final String namespaceOrAlias, final String name) throws EdmException { |
| String finalNamespace = getNamespaceForAlias(namespaceOrAlias); |
| FullQualifiedName fqName = new FullQualifiedName(finalNamespace, name); |
| if (edmComplexTypes.containsKey(fqName)) { |
| return edmComplexTypes.get(fqName); |
| } |
| |
| EdmComplexType edmComplexType = null; |
| |
| try { |
| edmComplexType = createComplexType(fqName); |
| if (edmComplexType != null) { |
| edmComplexTypes.put(fqName, edmComplexType); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| |
| return edmComplexType; |
| } |
| |
| @Override |
| public EdmAssociation getAssociation(final String namespaceOrAlias, final String name) throws EdmException { |
| String finalNamespace = getNamespaceForAlias(namespaceOrAlias); |
| FullQualifiedName fqName = new FullQualifiedName(finalNamespace, name); |
| if (edmAssociations.containsKey(fqName)) { |
| return edmAssociations.get(fqName); |
| } |
| |
| EdmAssociation edmAssociation = null; |
| |
| try { |
| edmAssociation = createAssociation(fqName); |
| if (edmAssociation != null) { |
| edmAssociations.put(fqName, edmAssociation); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| |
| return edmAssociation; |
| } |
| |
| @Override |
| public EdmServiceMetadata getServiceMetadata() { |
| return edmServiceMetadata; |
| } |
| |
| @Override |
| public EdmEntityContainer getDefaultEntityContainer() throws EdmException { |
| return getEntityContainer(null); |
| } |
| |
| @Override |
| public List<EdmEntitySet> getEntitySets() throws EdmException { |
| try { |
| if (edmEntitySets == null) { |
| edmEntitySets = createEntitySets(); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| return edmEntitySets; |
| } |
| |
| @Override |
| public List<EdmFunctionImport> getFunctionImports() throws EdmException { |
| try { |
| if (edmFunctionImports == null) { |
| edmFunctionImports = createFunctionImports(); |
| } |
| } catch (EdmException e) { |
| throw e; |
| } catch (ODataException e) { |
| throw new EdmException(EdmException.COMMON, e); |
| } |
| return edmFunctionImports; |
| } |
| |
| protected abstract EdmEntityContainer createEntityContainer(String name) throws ODataException; |
| |
| protected abstract EdmEntityType createEntityType(FullQualifiedName fqName) throws ODataException; |
| |
| protected abstract EdmComplexType createComplexType(FullQualifiedName fqName) throws ODataException; |
| |
| protected abstract EdmAssociation createAssociation(FullQualifiedName fqName) throws ODataException; |
| |
| protected abstract List<EdmEntitySet> createEntitySets() throws ODataException; |
| |
| protected abstract List<EdmFunctionImport> createFunctionImports() throws ODataException; |
| |
| protected abstract Map<String, String> createAliasToNamespaceInfo() throws ODataException; |
| } |