jdoc
authorNiki Roo <niki@nikiroo.be>
Mon, 29 Apr 2019 19:51:54 +0000 (21:51 +0200)
committerNiki Roo <niki@nikiroo.be>
Mon, 29 Apr 2019 19:51:54 +0000 (21:51 +0200)
src/be/nikiroo/utils/serial/CustomSerializer.java
src/be/nikiroo/utils/serial/server/ConnectAction.java

index e5539c0fdce8669592a932c819d458b0717c1613..c5876ce401b622788f53ca073ced5e89d7ca56c2 100644 (file)
@@ -10,17 +10,74 @@ import be.nikiroo.utils.streams.NextableInputStreamStep;
 import be.nikiroo.utils.streams.ReplaceInputStream;
 import be.nikiroo.utils.streams.ReplaceOutputStream;
 
+/**
+ * A {@link CustomSerializer} supports and generates values in the form:
+ * <ul>
+ * <li><tt>custom^<i>TYPE</i>^<i>ENCODED_VALUE</i></tt></li>
+ * </ul>
+ * <p>
+ * In this scheme, the values are:
+ * <ul>
+ * <li><tt>custom</tt>: a fixed keyword</li>
+ * <li><tt>^</tt>: a fixed separator character (the
+ * <tt><i>ENCODED_VALUE</i></tt> can still use it inside its content, though</li>
+ * <li><tt><i>TYPE</i></tt>: the object type of this value</li>
+ * <li><tt><i>ENCODED_VALUE</i></tt>: the custom encoded value</li>
+ * </ul>
+ * <p>
+ * To create a new {@link CustomSerializer}, you are expected to implement the
+ * abstract methods of this class. The rest should be taken care of bythe
+ * system.
+ * 
+ * @author niki
+ */
 public abstract class CustomSerializer {
-
+       /**
+        * Generate the custom <tt><i>ENCODED_VALUE</i></tt> from this
+        * <tt>value</tt>.
+        * <p>
+        * The <tt>value</tt> will always be of the supported type.
+        * 
+        * @param out
+        *            the {@link OutputStream} to write the value to
+        * @param value
+        *            the value to serialize
+        * 
+        * @throws IOException
+        *             in case of I/O error
+        */
        protected abstract void toStream(OutputStream out, Object value)
                        throws IOException;
 
+       /**
+        * Regenerate the value from the custom <tt><i>ENCODED_VALUE</i></tt>.
+        * <p>
+        * The value in the {@link InputStream} <tt>in</tt> will always be of the
+        * supported type.
+        * 
+        * @param in
+        *            the {@link InputStream} containing the
+        *            <tt><i>ENCODED_VALUE</i></tt>
+        * 
+        * @return the regenerated object
+        * 
+        * @throws IOException
+        *             in case of I/O error
+        */
        protected abstract Object fromStream(InputStream in) throws IOException;
 
+       /**
+        * Return the supported type name.
+        * <p>
+        * It <b>must</b> be the name returned by {@link Object#getClass()
+        * #getCanonicalName()}.
+        * 
+        * @return the supported class name
+        */
        protected abstract String getType();
 
        /**
-        * Encode the object into the given {@link OutputStream} if supported.
+        * Encode the object into the given {@link OutputStream}.
         * 
         * @param out
         *            the builder to append to
@@ -45,6 +102,17 @@ public abstract class CustomSerializer {
                }
        }
 
+       /**
+        * Decode the value back into the supported object type.
+        * 
+        * @param in
+        *            the encoded value
+        * 
+        * @return the object
+        * 
+        * @throws IOException
+        *             in case of I/O error
+        */
        public Object decode(InputStream in) throws IOException {
                ReplaceInputStream replace = new ReplaceInputStream(in, //
                                new String[] { "\\\\", "\\n" }, //
index 25bde2458ee4789d8436918621c791e2085c0ae6..c02d734f8a95ee34fc9b3e116c5f8357dbd02940 100644 (file)
@@ -364,6 +364,7 @@ abstract class ConnectAction {
         * @throws java.lang.NullPointerException
         *             for Objects only: if the counter part has no data to send
         */
+       @SuppressWarnings("resource")
        private Object rec(boolean asString) throws IOException,
                        NoSuchFieldException, NoSuchMethodException,
                        ClassNotFoundException, java.lang.NullPointerException {