/*
* 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, "");
}
}