/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.camel.component.gora.utils;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import org.apache.camel.Exchange;
import org.apache.camel.component.gora.GoraAttribute;
import org.apache.camel.component.gora.GoraConfiguration;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.gora.persistency.Persistent;
import org.apache.gora.query.Query;
import org.apache.gora.store.DataStore;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* GoraUtil class contain utility methods for the
* camel component.
*/
public final class GoraUtils {
/**
* Private Constructor to prevent
* instantiation of the class.
*/
private GoraUtils() {
// utility Class
}
/**
* Utility method to construct a new query from the exchange
*
* <b>NOTE:</b> values used in order construct the query
* should be stored in the "in" message headers.
*/
public static Query<Object, Persistent> constractQueryFromConfiguration(final DataStore<Object, Persistent> dataStore, final GoraConfiguration conf)
throws ClassNotFoundException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
final Query<Object, Persistent> query = dataStore.newQuery();
if (configurationExist(GoraAttribute.GORA_QUERY_START_TIME, conf)) {
query.setStartTime(getAttributeAsLong(GoraAttribute.GORA_QUERY_START_TIME, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_END_TIME, conf)) {
query.setEndTime(getAttributeAsLong(GoraAttribute.GORA_QUERY_END_TIME, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_LIMIT, conf)) {
query.setLimit(getAttributeAsLong(GoraAttribute.GORA_QUERY_LIMIT, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_TIME_RANGE_FROM, conf)
&& configurationExist(GoraAttribute.GORA_QUERY_TIME_RANGE_TO, conf)) {
query.setTimeRange(getAttributeAsLong(GoraAttribute.GORA_QUERY_TIME_RANGE_FROM, conf),
getAttributeAsLong(GoraAttribute.GORA_QUERY_TIME_RANGE_TO, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_TIMESTAMP, conf)) {
query.setTimestamp(getAttributeAsLong(GoraAttribute.GORA_QUERY_TIMESTAMP, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_START_KEY, conf)) {
query.setStartKey(getAttribute(GoraAttribute.GORA_QUERY_START_KEY, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_END_KEY, conf)) {
query.setEndKey(getAttribute(GoraAttribute.GORA_QUERY_END_KEY, conf));
}
if (configurationExist(GoraAttribute.GORA_QUERY_KEY_RANGE_FROM, conf)
&& configurationExist(GoraAttribute.GORA_QUERY_KEY_RANGE_TO, conf)) {
query.setKeyRange(getAttribute(GoraAttribute.GORA_QUERY_KEY_RANGE_FROM, conf),
getAttribute(GoraAttribute.GORA_QUERY_KEY_RANGE_TO, conf));
}
return query;
}
/**
* Utility method to construct a new query from the exchange
*
* <b>NOTE:</b> values used in order construct the query
* should be stored in the "in" message headers.
*/
public static Query<Object, Persistent> constractQueryFromPropertiesMap(final Map<String, ?> propertiesMap,
final DataStore<Object, Persistent> dataStore,
final GoraConfiguration conf) throws ClassNotFoundException {
final Query<Object, Persistent> query = dataStore.newQuery();
if (propertyExist(GoraAttribute.GORA_QUERY_START_TIME, propertiesMap)) {
query.setStartTime(getPropertyAsLong(GoraAttribute.GORA_QUERY_START_TIME, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_END_TIME, propertiesMap)) {
query.setEndTime(getPropertyAsLong(GoraAttribute.GORA_QUERY_END_TIME, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_LIMIT, propertiesMap)) {
query.setLimit(getPropertyAsLong(GoraAttribute.GORA_QUERY_LIMIT, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_TIME_RANGE_FROM, propertiesMap)
&& propertyExist(GoraAttribute.GORA_QUERY_TIME_RANGE_TO, propertiesMap)) {
query.setTimeRange(getPropertyAsLong(GoraAttribute.GORA_QUERY_TIME_RANGE_FROM, propertiesMap),
getPropertyAsLong(GoraAttribute.GORA_QUERY_TIME_RANGE_TO, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_TIMESTAMP, propertiesMap)) {
query.setTimestamp(getPropertyAsLong(GoraAttribute.GORA_QUERY_TIMESTAMP, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_START_KEY, propertiesMap)) {
query.setStartKey(getProperty(GoraAttribute.GORA_QUERY_START_KEY, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_END_KEY, propertiesMap)) {
query.setStartKey(getProperty(GoraAttribute.GORA_QUERY_END_KEY, propertiesMap));
}
if (propertyExist(GoraAttribute.GORA_QUERY_KEY_RANGE_FROM, propertiesMap)
&& propertyExist(GoraAttribute.GORA_QUERY_KEY_RANGE_TO, propertiesMap)) {
query.setKeyRange(getProperty(GoraAttribute.GORA_QUERY_KEY_RANGE_FROM, propertiesMap),
getProperty(GoraAttribute.GORA_QUERY_KEY_RANGE_TO, propertiesMap));
}
return query;
}
/**
* Utility method to check if a value exist in the configuration class
*
* <b>NOTE:</>
* Checks only if is not null
*/
protected static boolean configurationExist(final GoraAttribute attr,
final GoraConfiguration conf) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
return PropertyUtils.getSimpleProperty(conf, attr.value) != null;
}
/**
* Utility method to check if a value exist in the properties map
*/
protected static boolean propertyExist(final GoraAttribute attr,
final Map<String, ?> propertiesMap) {
return propertiesMap.containsKey(attr.value);
}
/**
* Utility method to extract value from configuration
*/
protected static Object getAttribute(final GoraAttribute attr,
final GoraConfiguration conf) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
return PropertyUtils.getSimpleProperty(conf, attr.value);
}
/**
* Utility method to extract value from configuration as String
*/
protected static String getAttributeAsString(final GoraAttribute attr,
final GoraConfiguration conf) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
return String.valueOf(getAttribute(attr, conf));
}
/**
* Utility method to extract value from configuration as Long
*/
protected static Long getAttributeAsLong(final GoraAttribute attr,
final GoraConfiguration conf) throws IllegalAccessException, NoSuchMethodException, InvocationTargetException {
return Long.parseLong(getAttributeAsString(attr, conf));
}
/**
* Utility method to extract value of a map
*/
protected static Object getProperty(final GoraAttribute attr,
final Map<String, ?> propertiesMap) {
return propertiesMap.get(attr.value);
}
/**
* Utility method to extract value of a map as String
*/
protected static String getPropertyAsString(final GoraAttribute attr,
final Map<String, ?> propertiesMap) {
return String.valueOf(getProperty(attr, propertiesMap));
}
/**
* Utility method to extract value of a map as long
*/
protected static Long getPropertyAsLong(final GoraAttribute attr,
final Map<String, ?> propertiesMap) {
return Long.parseLong(getPropertyAsString(attr, propertiesMap));
}
/**
* Utility method to extract GORA key from the exchange
*
* <b>NOTE:</b> key value expected to be stored
* in the "in" message headers.
*
* @param exchange The Camel Exchange
* @return The key
*/
public static Object getKeyFromExchange(Exchange exchange) {
final Object key = exchange.getIn().getHeader(GoraAttribute.GORA_KEY.value);
checkNotNull(key, "Key should not be null!");
return key;
}
/**
* Utility method to extract the value from the exchange
*
* <b>NOTE:</b> the value expected to be instance
* of persistent type.
*
* @param exchange The Camel Exchange
* @return The value
*/
public static Persistent getValueFromExchange(Exchange exchange) {
return exchange.getIn().getBody(Persistent.class);
}
}