/*******************************************************************************
* Copyright 2013 André Rouél
*
* Licensed 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 net.sf.uadetector.json.internal.data.deserializer;
import static net.sf.uadetector.json.internal.data.field.SerializableOrderedPatternField.HASH;
import static net.sf.uadetector.json.internal.data.field.SerializableOrderedPatternField.PATTERN;
import java.lang.reflect.Type;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Pattern;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import net.sf.qualitycheck.Check;
import net.sf.uadetector.internal.data.domain.DevicePattern;
import net.sf.uadetector.json.SerDeOption;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
public final class DevicePatternDeserializer extends AbstractDeserializer<DevicePattern> implements JsonDeserializer<DevicePattern> {
private final Map<String, DevicePattern> devicePatterns = new HashMap<String, DevicePattern>();
private final AtomicInteger counter = new AtomicInteger(0);
public DevicePatternDeserializer(final EnumSet<SerDeOption> options) {
super(options);
}
@Override
public DevicePattern deserialize(final JsonElement json, final Type typeOfT, final JsonDeserializationContext context) {
String hash = EMPTY_HASH_CODE;
Pattern pattern = null;
// deserialize
for (final Entry<String, JsonElement> entry : json.getAsJsonObject().entrySet()) {
if (PATTERN.getName().equals(entry.getKey())) {
pattern = context.deserialize(entry.getValue(), Pattern.class);
} else if (HASH.getName().equals(entry.getKey())) {
hash = entry.getValue().getAsString();
}
}
final int id = counter.incrementAndGet();
// create device pattern
DevicePattern devicePattern = null;
try {
devicePattern = new DevicePattern(id, pattern, id);
// check hash when option is set
checkHash(json, hash, devicePattern);
// add pattern to map
devicePatterns.put(hash, devicePattern);
} catch (final Exception e) {
addWarning(e.getLocalizedMessage());
}
return devicePattern;
}
@Nullable
public DevicePattern findDevicePattern(@Nonnull final String hash) {
Check.notEmpty(hash, "hash");
final DevicePattern devicePattern = devicePatterns.get(hash);
if (devicePattern == null) {
addWarning("Can not find device pattern for hash '" + hash + "'.");
}
return devicePattern;
}
}