Flare Microsystems
99 lines
2.8 KiB
Java
99 lines
2.8 KiB
Java
package com.flaremicrosystems.sds;
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import java.io.DataInputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.HashMap;
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public abstract class SDSObject<T> {
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T value;
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static ArrayList<Integer> ids = new ArrayList<Integer>();
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static ArrayList<Class<?>> objects = new ArrayList<Class<?>>();
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static ArrayList<Class<?>> dataTypes = new ArrayList<Class<?>>();
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static final int OPCODE_BYTES = 4;
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static final int LENGTH_BYTES = 4;
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static {
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registerDataStore(0, SDSBooleanType.class, Boolean.class);
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registerDataStore(1, SDSByteType.class, Byte.class);
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registerDataStore(2, SDSShortType.class, Short.class);
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registerDataStore(3, SDSIntType.class, Integer.class);
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registerDataStore(4, SDSCharType.class, Character.class);
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registerDataStore(5, SDSLongType.class, Long.class);
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registerDataStore(6, SDSFloatType.class, Float.class);
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registerDataStore(7, SDSDoubleType.class, Double.class);
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registerDataStore(8, SDSStringType.class, String.class);
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registerDataStore(9, SDSListType.class, ArrayList.class);
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registerDataStore(10, SDSNameMapType.class, HashMap.class);
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registerDataStore(11, SDSBinaryDataType.class, byte[].class);
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registerDataStore(12, SDSNullType.class, null);
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}
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public SDSObject() {
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}
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public SDSObject(T value) {
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this.value = value;
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}
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public T getValue() {
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return value;
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}
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public boolean isNull()
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{
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return false;
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}
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public abstract int getByteLength();
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public void setValue(T newVal) {
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value = newVal;
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}
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@Override
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public String toString()
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{
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return this.value.toString();
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}
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public void store(DataOutputStream out) throws IOException {
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int id = ids.get(objects.indexOf(this.getClass()));
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out.writeInt(id);
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int length = getByteLength();
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out.writeInt(length);
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}
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public static void registerDataStore(int id, Class<?> obj, Class<?> dataType) {
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ids.add(id);
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objects.add(obj);
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dataTypes.add(dataType);
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}
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public SDSObject<?> load(DataInputStream in) throws IOException, SDSUndefinedException {
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return this;
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}
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public static SDSObject<?> readObject(DataInputStream in) throws IOException, SDSUndefinedException {
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int id = in.readInt();
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int length = in.readInt();
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if (!ids.contains(id))
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{
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in.read(new byte[length]);
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throw new SDSUndefinedException("Unknown identifier: " + id);
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}
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@SuppressWarnings({ "rawtypes", "unchecked" })
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Class<SDSObject> obj = (Class<SDSObject>) objects.get(ids.get(id));
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try {
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return obj.newInstance().load(in);
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} catch (InstantiationException e) {
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e.printStackTrace();
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throw new SDSTotalFailureException(e);
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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throw new SDSTotalFailureException(e);
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}
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}
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}
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