| /* |
| * 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.commons.core.edm; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.LinkedHashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.olingo.commons.api.edm.Edm; |
| import org.apache.olingo.commons.api.edm.EdmEnumType; |
| import org.apache.olingo.commons.api.edm.EdmException; |
| import org.apache.olingo.commons.api.edm.EdmMember; |
| import org.apache.olingo.commons.api.edm.EdmPrimitiveType; |
| import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeException; |
| import org.apache.olingo.commons.api.edm.EdmPrimitiveTypeKind; |
| import org.apache.olingo.commons.api.edm.FullQualifiedName; |
| import org.apache.olingo.commons.api.edm.constants.EdmTypeKind; |
| import org.apache.olingo.commons.api.edm.provider.CsdlEnumMember; |
| import org.apache.olingo.commons.api.edm.provider.CsdlEnumType; |
| import org.apache.olingo.commons.core.edm.primitivetype.EdmInt64; |
| import org.apache.olingo.commons.core.edm.primitivetype.EdmPrimitiveTypeFactory; |
| |
| public class EdmEnumTypeImpl extends EdmTypeImpl implements EdmEnumType { |
| |
| private final EdmPrimitiveType underlyingType; |
| private final CsdlEnumType enumType; |
| private final FullQualifiedName enumName; |
| private List<String> memberNames; |
| private Map<String, EdmMember> membersMap; |
| |
| public EdmEnumTypeImpl(final Edm edm, final FullQualifiedName enumName, final CsdlEnumType enumType) { |
| super(edm, enumName, EdmTypeKind.ENUM, enumType); |
| |
| if (enumType.getUnderlyingType() == null) { |
| underlyingType = EdmPrimitiveTypeFactory.getInstance(EdmPrimitiveTypeKind.Int32); |
| } else { |
| final EdmPrimitiveTypeKind underlyingTypeKind = EdmPrimitiveTypeKind.valueOfFQN(enumType.getUnderlyingType()); |
| if (underlyingTypeKind == EdmPrimitiveTypeKind.Byte |
| || underlyingTypeKind == EdmPrimitiveTypeKind.SByte |
| || underlyingTypeKind == EdmPrimitiveTypeKind.Int16 |
| || underlyingTypeKind == EdmPrimitiveTypeKind.Int32 |
| || underlyingTypeKind == EdmPrimitiveTypeKind.Int64) { |
| underlyingType = EdmPrimitiveTypeFactory.getInstance(underlyingTypeKind); |
| } else { |
| throw new EdmException("Not allowed as underlying type: " + underlyingTypeKind); |
| } |
| } |
| |
| this.enumType = enumType; |
| this.enumName = enumName; |
| } |
| |
| @Override |
| public EdmPrimitiveType getUnderlyingType() { |
| return underlyingType; |
| } |
| |
| @Override |
| public EdmMember getMember(final String name) { |
| if (membersMap == null) { |
| createEdmMembers(); |
| } |
| return membersMap.get(name); |
| } |
| |
| @Override |
| public List<String> getMemberNames() { |
| if (memberNames == null) { |
| createEdmMembers(); |
| } |
| return Collections.unmodifiableList(memberNames); |
| } |
| |
| /** |
| * Creates the map from member names to member objects, |
| * preserving the order for the case of implicit value assignments. |
| */ |
| private void createEdmMembers() { |
| final Map<String, EdmMember> membersMapLocal = new LinkedHashMap<String, EdmMember>(); |
| final List<String> memberNamesLocal = new ArrayList<String>(); |
| if (enumType.getMembers() != null) { |
| for (final CsdlEnumMember member : enumType.getMembers()) { |
| membersMapLocal.put(member.getName(), new EdmMemberImpl(edm, member)); |
| memberNamesLocal.add(member.getName()); |
| } |
| |
| membersMap = membersMapLocal; |
| memberNames = memberNamesLocal; |
| } |
| } |
| |
| @Override |
| public boolean isCompatible(final EdmPrimitiveType primitiveType) { |
| return equals(primitiveType); |
| } |
| |
| @Override |
| public Class<?> getDefaultType() { |
| return getUnderlyingType().getDefaultType(); |
| } |
| |
| @Override |
| public boolean validate(final String value, final Boolean isNullable, final Integer maxLength, |
| final Integer precision, final Integer scale, final Boolean isUnicode) { |
| |
| try { |
| valueOfString(value, isNullable, maxLength, precision, scale, isUnicode, getDefaultType()); |
| return true; |
| } catch (final EdmPrimitiveTypeException e) { |
| return false; |
| } |
| } |
| |
| private Long parseEnumValue(final String value) throws EdmPrimitiveTypeException { |
| Long result = null; |
| for (final String memberValue : value.split(",", isFlags() ? -1 : 1)) { |
| Long memberValueLong = null; |
| long count = 0; |
| for (final EdmMember member : getMembers()) { |
| count++; |
| if (memberValue.equals(member.getName()) || memberValue.equals(member.getValue())) { |
| memberValueLong = member.getValue() == null ? count - 1 : Long.decode(member.getValue()); |
| } |
| } |
| if (memberValueLong == null) { |
| throw new EdmPrimitiveTypeException("The literal '" + value + "' has illegal content."); |
| } |
| result = result == null ? memberValueLong : result | memberValueLong; |
| } |
| return result; |
| } |
| |
| @Override |
| public <T> T valueOfString(final String value, final Boolean isNullable, final Integer maxLength, |
| final Integer precision, final Integer scale, final Boolean isUnicode, final Class<T> returnType) |
| throws EdmPrimitiveTypeException { |
| |
| if (value == null) { |
| if (isNullable != null && !isNullable) { |
| throw new EdmPrimitiveTypeException("The literal 'null' is not allowed."); |
| } |
| return null; |
| } |
| |
| try { |
| return EdmInt64.convertNumber(parseEnumValue(value), returnType); |
| } catch (final IllegalArgumentException e) { |
| throw new EdmPrimitiveTypeException("The literal '" + value |
| + "' cannot be converted to value type " + returnType + ".", e); |
| } catch (final ClassCastException e) { |
| throw new EdmPrimitiveTypeException("The value type " + returnType + " is not supported.", e); |
| } |
| } |
| |
| private String constructEnumValue(final long value) throws EdmPrimitiveTypeException { |
| long remaining = value; |
| StringBuilder result = new StringBuilder(); |
| |
| final boolean flags = isFlags(); |
| long memberValue = -1; |
| for (final EdmMember member : getMembers()) { |
| memberValue = member.getValue() == null ? memberValue + 1 : Long.parseLong(member.getValue()); |
| if (flags) { |
| if ((memberValue & remaining) == memberValue) { |
| if (result.length() > 0) { |
| result.append(','); |
| } |
| result.append(member.getName()); |
| remaining ^= memberValue; |
| } |
| } else { |
| if (value == memberValue) { |
| return member.getName(); |
| } |
| } |
| } |
| |
| if (remaining != 0) { |
| throw new EdmPrimitiveTypeException("The value '" + value + "' is not valid."); |
| } |
| return result.toString(); |
| } |
| |
| private Collection<EdmMember> getMembers() { |
| if (membersMap == null) { |
| createEdmMembers(); |
| } |
| return membersMap.values(); |
| } |
| |
| @Override |
| public String valueToString(final Object value, final Boolean isNullable, final Integer maxLength, |
| final Integer precision, final Integer scale, final Boolean isUnicode) throws EdmPrimitiveTypeException { |
| |
| if (value == null) { |
| if (isNullable != null && !isNullable) { |
| throw new EdmPrimitiveTypeException("The value NULL is not allowed."); |
| } |
| return null; |
| } |
| if (value instanceof Byte || value instanceof Short || value instanceof Integer || value instanceof Long) { |
| return constructEnumValue(((Number) value).longValue()); |
| } else { |
| throw new EdmPrimitiveTypeException("The value type " + value.getClass() + " is not supported."); |
| } |
| } |
| |
| @Override |
| public String toUriLiteral(final String literal) { |
| return literal == null ? null : enumName.getFullQualifiedNameAsString() + "'" + literal + "'"; |
| } |
| |
| @Override |
| public String fromUriLiteral(final String literal) throws EdmPrimitiveTypeException { |
| if (literal == null) { |
| return null; |
| } else { |
| String uriPrefix = enumName.getFullQualifiedNameAsString() + "'"; |
| String uriSuffix = "'"; |
| if (literal.length() >= uriPrefix.length() + uriSuffix.length() |
| && literal.startsWith(uriPrefix) && literal.endsWith(uriSuffix)) { |
| // This is the positive case where the literal is prefixed with the full qualified name of the enum type |
| return literal.substring(uriPrefix.length(), literal.length() - uriSuffix.length()); |
| } else { |
| // This case will be called if the prefix might be an alias |
| if (literal.endsWith(uriSuffix)) { |
| int indexSingleQuote = literal.indexOf('\''); |
| String fqn = literal.substring(0, indexSingleQuote); |
| FullQualifiedName typeFqn = null; |
| try { |
| typeFqn = new FullQualifiedName(fqn); |
| } catch (IllegalArgumentException e) { |
| throw new EdmPrimitiveTypeException("The literal '" + literal + "' has illegal content.", e); |
| } |
| /* |
| * Get itself. This will also resolve a possible alias. If we had an easier way to query the edm for an alias |
| * we could use this here. But since there is no such method we try to get the enum type based on a possible |
| * alias qualified name. This way the edm will resolve the alias for us. Also in a positive case the type is |
| * already cached so the EdmProvider should not be called. |
| */ |
| EdmEnumType prospect = edm.getEnumType(typeFqn); |
| if (prospect != null && enumName.equals(prospect.getFullQualifiedName()) |
| && literal.length() >= fqn.length() + 2) { |
| return literal.substring(fqn.length() + 1, literal.length() - 1); |
| } |
| } |
| } |
| } |
| throw new EdmPrimitiveTypeException("The literal '" + literal + "' has illegal content."); |
| } |
| |
| @Override |
| public boolean isFlags() { |
| return enumType.isFlags(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return getFullQualifiedName().getFullQualifiedNameAsString().hashCode(); |
| } |
| |
| @Override |
| public boolean equals(final Object obj) { |
| return obj != null |
| && (obj == this |
| || obj instanceof EdmEnumType |
| && getFullQualifiedName().equals(((EdmEnumType) obj).getFullQualifiedName())); |
| } |
| } |