/* * 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.base.Joiner; import com.google.common.base.Optional; import com.google.common.base.Preconditions; import com.google.common.base.Splitter; import com.google.common.collect.Collections2; import com.google.common.collect.ImmutableSet; import java.util.ArrayList; import java.util.List; import java.util.Set; import org.opendaylight.yangtools.yang.data.api.codec.BitsCodec; import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition; import org.opendaylight.yangtools.yang.model.api.type.BitsTypeDefinition.Bit; final class BitsStringCodec extends TypeDefinitionAwareCodec, BitsTypeDefinition> implements BitsCodec { private static final Joiner JOINER = Joiner.on(" ").skipNulls(); private static final Splitter SPLITTER = Splitter.on(' ').omitEmptyStrings().trimResults(); private final Set validBits; @SuppressWarnings("unchecked") private BitsStringCodec(final Optional typeDef) { super(typeDef, (Class>) ((Class) Set.class)); if (typeDef.isPresent()) { validBits = ImmutableSet.copyOf(Collections2.transform(typeDef.get().getBits(), Bit::getName)); } else { validBits = null; } } static TypeDefinitionAwareCodec from(final BitsTypeDefinition normalizedType) { return new BitsStringCodec(Optional.fromNullable(normalizedType)); } @Override public String serialize(final Set data) { return data == null ? "" : JOINER.join(data); } @Override public Set deserialize(final String stringRepresentation) { if (stringRepresentation == null) { return ImmutableSet.of(); } final Set strings = ImmutableSet.copyOf(SPLITTER.split(stringRepresentation)); if (validBits == null) { // No schema available, use what we have return strings; } // Normalize strings to schema first, retaining definition order final List sorted = new ArrayList<>(strings.size()); for (final String bit : validBits) { if (strings.contains(bit)) { sorted.add(bit); } } // Check sizes, if the normalized set does not match non-normalized size, non-normalized strings contain // an invalid bit. if (sorted.size() != strings.size()) { for (final String bit : strings) { Preconditions.checkArgument(validBits.contains(bit), "Invalid value '%s' for bits type. Allowed values are: %s", bit, validBits); } } // In case all valid bits have been specified, retain the set we have created for this codec return sorted.size() == validBits.size() ? validBits : ImmutableSet.copyOf(sorted); } }