63 lines
1.8 KiB
Java
63 lines
1.8 KiB
Java
/*
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* To change this license header, choose License Headers in Project Properties.
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* To change this template file, choose Tools | Templates
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* and open the template in the editor.
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*/
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package com.wentch.redkale.convert;
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import java.lang.reflect.ParameterizedType;
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import java.lang.reflect.Type;
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import java.util.Map;
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/**
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*
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* @author zhangjx
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* @param <K>
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* @param <V>
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*/
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@SuppressWarnings("unchecked")
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public final class MapEncoder<K, V> implements Encodeable<Writer, Map<K, V>> {
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private final Type type;
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private final Encodeable<Writer, K> keyencoder;
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private final Encodeable<Writer, V> valencoder;
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public MapEncoder(final Factory factory, final Type type) {
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this.type = type;
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if (type instanceof ParameterizedType) {
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final Type[] pt = ((ParameterizedType) type).getActualTypeArguments();
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this.keyencoder = factory.loadEncoder(pt[0]);
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this.valencoder = factory.loadEncoder(pt[1]);
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} else {
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this.keyencoder = factory.getAnyEncoder();
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this.valencoder = factory.getAnyEncoder();
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}
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}
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@Override
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public void convertTo(Writer out, Map<K, V> value) {
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final Map<K, V> values = value;
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if (values == null) {
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out.writeNull();
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return;
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}
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out.writeMapB(values.size());
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boolean first = true;
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for (Map.Entry<K, V> en : values.entrySet()) {
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if (!first) out.writeArrayMark();
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this.keyencoder.convertTo(out, en.getKey());
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out.writeMapMark();
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this.valencoder.convertTo(out, en.getValue());
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if (first) first = false;
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}
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out.writeMapE();
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}
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@Override
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public Type getType() {
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return type;
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}
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}
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