/*
* 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.geode.rest.internal.web.controllers.support;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializable;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import org.apache.geode.cache.query.Struct;
import org.apache.geode.cache.query.internal.StructImpl;
import org.apache.geode.pdx.JSONFormatter;
import org.apache.geode.pdx.PdxInstance;
import org.apache.geode.rest.internal.web.util.JSONUtils;
import org.apache.geode.rest.internal.web.util.JsonWriter;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* The RegionData class is a container for data fetched from a GemFire Cache Region.
* <p/>
*
* @see com.fasterxml.jackson.databind.JsonSerializable
* @see java.lang.Iterable
* @since GemFire 8.0
*/
@SuppressWarnings("unused")
@XmlRootElement(name = "region")
@XmlType(name = "org.gopivotal.app.web.controllers.support.RegionData")
public class RegionData<T> implements Iterable<T>, JsonSerializable {
private final List<T> data = new ArrayList<T>();
private String regionNamePath;
public RegionData() {}
public RegionData(final String regionNamePath) {
setRegionNamePath(regionNamePath);
}
public String getRegionNamePath() {
Assert.state(StringUtils.hasText(this.regionNamePath),
"The Region name/path was not properly initialized!");
return regionNamePath;
}
public final void setRegionNamePath(final String regionNamePath) {
Assert.hasText(regionNamePath, "The name or path of the Region must be specified!");
this.regionNamePath = regionNamePath;
}
public RegionData<T> add(final T data) {
// We are adding null data into the response
// Assert.notNull(data, String.format("The data to add to Region (%1$s) cannot be null!",
// getRegionNamePath()));
// if(data != null) {
this.data.add(data);
// }
return this;
}
public RegionData<T> add(final T... data) {
for (final T element : data) {
if (element != null) {
add(element);
}
}
return this;
}
public RegionData<T> add(final Iterable<T> data) {
for (final T element : data) {
// Adding null data into the response
/*
* if (element != null) { add(element); }
*/
add(element);
}
return this;
}
public T get(final int index) {
return list().get(index);
}
public boolean isEmpty() {
return this.data.isEmpty();
}
public Iterator<T> iterator() {
return list().iterator();
}
public List<T> list() {
return Collections.unmodifiableList(this.data);
}
public int size() {
return this.data.size();
}
protected String convertToJson(final PdxInstance pdxObj) {
return (pdxObj != null ? JSONFormatter.toJSON(pdxObj) : null);
}
public void serialize(final JsonGenerator jsonGenerator,
final SerializerProvider serializerProvider) throws IOException {
// if(this!=null && this.size() > 1) {
jsonGenerator.writeStartObject();
jsonGenerator.writeArrayFieldStart(getRegionNamePath());
// }
for (T element : this) {
JsonWriter.writeValueAsJson(jsonGenerator, element, null);
}
// if(this!=null && this.size() > 1) {
jsonGenerator.writeEndArray();
jsonGenerator.writeEndObject();
// }
}
public void serializeWithType(final JsonGenerator jsonGenerator,
final SerializerProvider serializerProvider, final TypeSerializer typeSerializer)
throws IOException {
// NOTE serializing "type" meta-data is not necessary in this case; just call serialize.
serialize(jsonGenerator, serializerProvider);
}
}