/* * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.yangtools.yang.data.impl.codec; import com.google.common.annotations.Beta; import com.google.common.base.Optional; import com.google.common.base.Preconditions; import com.google.common.collect.ImmutableMap; import com.google.common.collect.ImmutableMap.Builder; import java.util.Map; import java.util.Objects; import org.opendaylight.yangtools.yang.data.api.codec.EnumCodec; import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition; import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair; /** * Do not use this class outside of yangtools, its presence does not fall into the API stability contract. */ @Beta public final class EnumStringCodec extends TypeDefinitionAwareCodec<String, EnumTypeDefinition> implements EnumCodec<String> { private final Map<String, String> values; private EnumStringCodec(final Optional<EnumTypeDefinition> typeDef) { super(typeDef, String.class); if (typeDef.isPresent()) { final Builder<String, String> b = ImmutableMap.builder(); for (final EnumPair pair : typeDef.get().getValues()) { // Intern the String to get wide reuse final String v = pair.getName().intern(); b.put(v, v); } values = b.build(); } else { values = null; } } public static EnumStringCodec from(final EnumTypeDefinition normalizedType) { return new EnumStringCodec(Optional.of(normalizedType)); } @Override public String deserialize(final String s) { if (values == null) { return s; } // Lookup the serialized string in the values. Returned string is the interned instance, which we want // to use as the result. final String result = values.get(s); Preconditions.checkArgument(result != null, "Invalid value '%s' for enum type. Allowed values are: %s", s, values.keySet()); return result; } @Override public String serialize(final String data) { return Objects.toString(data, ""); } }