| /******************************************************************************* |
| * 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.UUID; |
| |
| import org.apache.olingo.odata2.api.edm.EdmFacets; |
| import org.apache.olingo.odata2.api.edm.EdmLiteralKind; |
| import org.apache.olingo.odata2.api.edm.EdmSimpleTypeException; |
| |
| /** |
| * Implementation of the EDM simple type Guid. |
| * |
| */ |
| public class EdmGuid extends AbstractSimpleType { |
| |
| private static final String PATTERN = "\\p{XDigit}{8}-\\p{XDigit}{4}-\\p{XDigit}{4}-\\p{XDigit}{4}-\\p{XDigit}{12}"; |
| private static final EdmGuid instance = new EdmGuid(); |
| |
| public static EdmGuid getInstance() { |
| return instance; |
| } |
| |
| @Override |
| public Class<?> getDefaultType() { |
| return UUID.class; |
| } |
| |
| @Override |
| public boolean validate(final String value, final EdmLiteralKind literalKind, final EdmFacets facets) { |
| return value == null ? |
| facets == null || facets.isNullable() == null || facets.isNullable() : |
| validateLiteralInternal(value, literalKind); |
| } |
| |
| private boolean validateLiteralInternal(String value, EdmLiteralKind literalKind) { |
| String cleanValue = null; |
| if (literalKind == EdmLiteralKind.URI && value.toLowerCase().startsWith("guid'") && value.endsWith("'")) { |
| cleanValue = value.substring(5, value.length() - 1); |
| } else { |
| cleanValue = value; |
| } |
| return validateLiteral(cleanValue); |
| } |
| |
| private boolean validateLiteral(final String value) { |
| return value.matches(PATTERN); |
| } |
| |
| @Override |
| protected <T> T internalValueOfString(final String value, final EdmLiteralKind literalKind, final EdmFacets facets, |
| final Class<T> returnType) throws EdmSimpleTypeException { |
| UUID result; |
| String cleanValue = null; |
| if (literalKind == EdmLiteralKind.URI && value.toLowerCase().startsWith("guid'") && value.endsWith("'")) { |
| cleanValue = value.substring(5, value.length() - 1); |
| } else { |
| cleanValue = value; |
| } |
| if (validateLiteral(cleanValue)) { |
| result = UUID.fromString(cleanValue); |
| } else { |
| throw new EdmSimpleTypeException(EdmSimpleTypeException.LITERAL_ILLEGAL_CONTENT.addContent(value)); |
| } |
| |
| if (returnType.isAssignableFrom(UUID.class)) { |
| return returnType.cast(result); |
| } else { |
| throw new EdmSimpleTypeException(EdmSimpleTypeException.VALUE_TYPE_NOT_SUPPORTED.addContent(returnType)); |
| } |
| } |
| |
| @Override |
| protected <T> String internalValueToString(final T value, final EdmLiteralKind literalKind, final EdmFacets facets) |
| throws EdmSimpleTypeException { |
| if (value instanceof UUID) { |
| return ((UUID) value).toString(); |
| } else { |
| throw new EdmSimpleTypeException(EdmSimpleTypeException.VALUE_TYPE_NOT_SUPPORTED.addContent(value.getClass())); |
| } |
| } |
| |
| @Override |
| public String toUriLiteral(final String literal) { |
| return "guid'" + literal + "'"; |
| } |
| } |