IntAttribute.java
/*
* Copyright (c) 2020, RTE (http://www.rte-france.com)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
* SPDX-License-Identifier: MPL-2.0
*/
package com.powsybl.metrix.integration.io;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
import com.google.common.io.LittleEndianDataInputStream;
import com.google.common.io.LittleEndianDataOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
/**
* @author Paul Bui-Quang {@literal <paul.buiquang at rte-france.com>}
*/
@JsonDeserialize(using = IntAttribute.JsonDeserializer.class)
class IntAttribute implements Attribute {
static final AttributeType TYPE = AttributeType.INTEGER;
private final String name;
private final int[] values;
IntAttribute(String name, int[] values) {
this.name = Objects.requireNonNull(name);
this.values = Objects.requireNonNull(values).clone();
}
IntAttribute(String name, int value) {
this.name = Objects.requireNonNull(name);
this.values = new int[value];
Arrays.fill(values, -1);
}
@Override
public String getName() {
return name;
}
@Override
public AttributeType getType() {
return TYPE;
}
@Override
public void read(LittleEndianDataInputStream is, int i, int j) throws IOException {
values[j] = is.readInt();
}
@Override
public void write(LittleEndianDataOutputStream os) throws IOException {
for (int value : values) {
os.writeInt(value);
}
}
@Override
public int getFirstIndexMaxValue() {
return values.length;
}
@Override
public int getSecondIndexMaxValue() {
return 1;
}
@Override
public int getValueCount() {
return values.length;
}
@Override
public int getSize() {
return values.length * Integer.BYTES;
}
public int[] getValues() {
return values.clone();
}
@Override
public void print(PrintStream out) {
for (int i = 0; i < values.length; i++) {
out.print(values[i]);
if (i < values.length - 1) {
out.print(", ");
}
}
}
@Override
public void writeJson(JsonGenerator generator) throws IOException {
for (int value : values) {
generator.writeNumber(value);
}
}
public static class JsonDeserializer extends StdDeserializer<IntAttribute> {
public JsonDeserializer() {
this(null);
}
public JsonDeserializer(Class<?> vc) {
super(vc);
}
@Override
public IntAttribute deserialize(JsonParser jp, DeserializationContext ctxt)
throws IOException {
JsonNode node = jp.getCodec().readTree(jp);
String name = node.get("name").asText();
List<Integer> values = new ArrayList<>();
node.get("values").elements().forEachRemaining(i -> values.add(i.intValue()));
return new IntAttribute(name, values.stream().mapToInt(i -> i).toArray());
}
}
}