| /** |
| * 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.atlas.typesystem.types; |
| |
| import com.google.common.collect.ImmutableCollection; |
| import com.google.common.collect.ImmutableMap; |
| import org.apache.atlas.AtlasException; |
| import scala.math.BigInt; |
| |
| import java.nio.charset.Charset; |
| import java.security.MessageDigest; |
| |
| public class EnumType extends AbstractDataType<EnumValue> { |
| |
| public TypeSystem typeSystem; |
| public final ImmutableMap<String, EnumValue> valueMap; |
| public final ImmutableMap<Integer, EnumValue> ordinalMap; |
| |
| protected EnumType(TypeSystem typeSystem, String name, EnumValue... values) { |
| this(typeSystem, name, null, values); |
| } |
| |
| protected EnumType(TypeSystem typeSystem, String name, String description, EnumValue... values) { |
| super(name, description); |
| this.typeSystem = typeSystem; |
| ImmutableMap.Builder<String, EnumValue> b1 = new ImmutableMap.Builder(); |
| ImmutableMap.Builder<Integer, EnumValue> b2 = new ImmutableMap.Builder(); |
| for (EnumValue v : values) { |
| b1.put(v.value, v); |
| b2.put(v.ordinal, v); |
| } |
| valueMap = b1.build(); |
| ordinalMap = b2.build(); |
| } |
| |
| public void setTypeSystem(TypeSystem typeSystem) { |
| this.typeSystem = typeSystem; |
| } |
| |
| @Override |
| public EnumValue convert(Object val, Multiplicity m) throws AtlasException { |
| if (val != null) { |
| EnumValue e = null; |
| if (val instanceof EnumValue) { |
| e = valueMap.get(((EnumValue) val).value); |
| } else if (val instanceof Integer || val instanceof BigInt) { |
| e = ordinalMap.get(val); |
| } else if (val instanceof String) { |
| e = valueMap.get(val); |
| } else if (val instanceof Number) { |
| e = ordinalMap.get(((Number) val).intValue()); |
| } |
| |
| if (e == null) { |
| throw new ValueConversionException(this, val); |
| } |
| return e; |
| } |
| return convertNull(m); |
| } |
| |
| @Override |
| public DataTypes.TypeCategory getTypeCategory() { |
| return DataTypes.TypeCategory.ENUM; |
| } |
| |
| @Override |
| public void validateUpdate(IDataType newType) throws TypeUpdateException { |
| super.validateUpdate(newType); |
| |
| EnumType enumType = (EnumType) newType; |
| for (EnumValue enumValue : values()) { |
| //The old enum value should be part of new enum definition as well |
| if (!enumType.valueMap.containsKey(enumValue.value)) { |
| throw new TypeUpdateException("Value " + enumValue.value + " is missing in new type"); |
| } |
| |
| //The ordinal for old enum value can't change |
| EnumValue newEnumValue = enumType.valueMap.get(enumValue.value); |
| if (enumValue.ordinal != newEnumValue.ordinal) { |
| throw new TypeUpdateException(String.format("Ordinal mismatch %s(%s) != %s(%s)", enumValue.value, |
| enumValue.ordinal, newEnumValue.value, newEnumValue.ordinal)); |
| } |
| } |
| } |
| |
| public void updateSignatureHash(MessageDigest digester, Object val) throws AtlasException { |
| if (val != null) { |
| digester.update(fromValue((String) val).toString().getBytes(Charset.forName("UTF-8"))); |
| } |
| } |
| |
| public EnumValue fromOrdinal(int o) { |
| return ordinalMap.get(o); |
| } |
| |
| public EnumValue fromValue(String val) { |
| return valueMap.get(val.trim()); |
| } |
| |
| public ImmutableCollection<EnumValue> values() { |
| return valueMap.values(); |
| } |
| } |