/*
* 2012-3 Red Hat Inc. and/or its affiliates and other contributors.
*
* 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 org.overlord.rtgov.activity.util;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.type.TypeReference;
import org.overlord.rtgov.activity.model.ActivityType;
import org.overlord.rtgov.activity.model.ActivityUnit;
import org.overlord.rtgov.activity.server.QuerySpec;
/**
* This class provides utility functions for the activity
* model.
*
*/
public final class ActivityUtil {
protected static final ObjectMapper MAPPER=new ObjectMapper();
private static final TypeReference<java.util.List<ActivityUnit>> ACTIVITY_UNIT_LIST=
new TypeReference<java.util.List<ActivityUnit>>() { };
private static final TypeReference<java.util.List<ActivityType>> ACTIVITY_TYPE_LIST=
new TypeReference<java.util.List<ActivityType>>() { };
private static ObjectWriter ATLIST_WRITER=null;
static {
MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
MAPPER.setSerializationInclusion(JsonInclude.Include.NON_DEFAULT);
ATLIST_WRITER = MAPPER.writerWithType(ACTIVITY_TYPE_LIST);
}
/**
* Private constructor.
*/
private ActivityUtil() {
}
/**
* This method serializes an Activity event into a JSON representation.
*
* @param act The activity
* @return The JSON serialized representation
* @throws Exception Failed to serialize
*/
public static byte[] serializeActivityUnit(ActivityUnit act) throws Exception {
byte[] ret=null;
java.io.ByteArrayOutputStream baos=new java.io.ByteArrayOutputStream();
MAPPER.writeValue(baos, act);
ret = baos.toByteArray();
baos.close();
return (ret);
}
/**
* This method serializes a Query Spec into a JSON representation.
*
* @param qs The query spec
* @return The JSON serialized representation
* @throws Exception Failed to serialize
*/
public static byte[] serializeQuerySpec(QuerySpec qs) throws Exception {
byte[] ret=null;
java.io.ByteArrayOutputStream baos=new java.io.ByteArrayOutputStream();
MAPPER.writeValue(baos, qs);
ret = baos.toByteArray();
baos.close();
return (ret);
}
/**
* This method serializes an object into a JSON string representation.
*
* @param obj The object
* @return The JSON serialized string representation
* @throws Exception Failed to serialize
*/
public static String objectToJSONString(Object obj) throws Exception {
String ret=null;
java.io.ByteArrayOutputStream baos=new java.io.ByteArrayOutputStream();
MAPPER.writeValue(baos, obj);
ret = new String(baos.toByteArray());
baos.close();
return (ret);
}
/**
* This method serializes an ActivityUnit list into a JSON representation.
*
* @param activities The activity unit list
* @return The JSON serialized representation
* @throws Exception Failed to serialize
*/
public static byte[] serializeActivityUnitList(java.util.List<ActivityUnit> activities) throws Exception {
byte[] ret=null;
java.io.ByteArrayOutputStream baos=new java.io.ByteArrayOutputStream();
MAPPER.writeValue(baos, activities);
ret = baos.toByteArray();
baos.close();
return (ret);
}
/**
* This method serializes an ActivityType event list into a JSON representation.
*
* @param activities The activity type list
* @return The JSON serialized representation
* @throws Exception Failed to serialize
*/
public static byte[] serializeActivityTypeList(java.util.List<ActivityType> activities) throws Exception {
byte[] ret=null;
java.io.ByteArrayOutputStream baos=new java.io.ByteArrayOutputStream();
ATLIST_WRITER.writeValue(baos, activities);
ret = baos.toByteArray();
baos.close();
return (ret);
}
/**
* This method deserializes an Activity event from a JSON representation.
*
* @param act The JSON representation of the activity
* @return The Activity event
* @throws Exception Failed to deserialize
*/
public static ActivityUnit deserializeActivityUnit(byte[] act) throws Exception {
ActivityUnit ret=null;
java.io.ByteArrayInputStream bais=new java.io.ByteArrayInputStream(act);
ret = MAPPER.readValue(bais, ActivityUnit.class);
bais.close();
return (ret);
}
/**
* This method deserializes a Query Spec from a JSON representation.
*
* @param qs The JSON representation of the query spec
* @return The query spec
* @throws Exception Failed to deserialize
*/
public static QuerySpec deserializeQuerySpec(byte[] qs) throws Exception {
QuerySpec ret=null;
java.io.ByteArrayInputStream bais=new java.io.ByteArrayInputStream(qs);
ret = MAPPER.readValue(bais, QuerySpec.class);
bais.close();
return (ret);
}
/**
* This method deserializes an Activity Unit list from a JSON representation.
*
* @param act The JSON representation of the activity
* @return The ActivityUnit event list
* @throws Exception Failed to deserialize
*/
public static java.util.List<ActivityUnit> deserializeActivityUnitList(byte[] act) throws Exception {
java.util.List<ActivityUnit> ret=null;
java.io.ByteArrayInputStream bais=new java.io.ByteArrayInputStream(act);
ret = MAPPER.readValue(bais, ACTIVITY_UNIT_LIST);
bais.close();
return (ret);
}
/**
* This method deserializes an ActivityType event list from a JSON representation.
*
* @param act The JSON representation of the activity
* @return The ActivityType event list
* @throws Exception Failed to deserialize
*/
public static java.util.List<ActivityType> deserializeActivityTypeList(byte[] act) throws Exception {
java.util.List<ActivityType> ret=null;
java.io.ByteArrayInputStream bais=new java.io.ByteArrayInputStream(act);
ret = MAPPER.readValue(bais, ACTIVITY_TYPE_LIST);
bais.close();
return (ret);
}
}