src/share/classes/javax/sql/rowset/serial/SerialBlob.java

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*** 1,7 **** /* ! * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this --- 1,7 ---- /* ! * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this
*** 26,35 **** --- 26,37 ---- package javax.sql.rowset.serial; import java.sql.*; import java.io.*; import java.lang.reflect.*; + import java.util.Arrays; + import java.util.Objects; /** * A serialized mapping in the Java programming language of an SQL * <code>BLOB</code> value.
*** 446,455 **** --- 448,550 ---- * @since 1.6 */ public void free() throws SQLException { throw new java.lang.UnsupportedOperationException("Not supported"); } + + /** + * Compares this SerialBlob to the specified object. The result is {@code + * true} if and only if the argument is not {@code null} and is a {@code + * SerialBlob} object that represents the same sequence of bytes as this + * object. + * + * @param obj + * The object to compare this {@code SerialBlob} against + * + * @return {@code true} if the given object represents a {@code SerialBlob} + * equivalent to this SerialBlob, {@code false} otherwise + * + */ + public boolean equals(Object obj) { + if (this == obj) { + return true; + } + if(obj == null || !(obj instanceof SerialBlob)) { + return false; + } + + SerialBlob sb = (SerialBlob)obj; + if(this.len == sb.len) { + return Arrays.equals(buf, sb.buf); + } + return false; + } + + /** + * Returns a hash code for this {@code SerialBlob}. + * @return a hash code value for this object. + */ + public int hashCode() { + return Objects.hash(buf, len, origLen); + } + + /** + * Returns a clone of this {@code SerialBlob}. The copy will contain a + * reference to a clone of the internal byte array, not a reference + * to the original internal byte array of this {@code SerialBlob} object. + * The internal {@code Blob} field will be set to null. + * + * @return a clone of this SerialBlob + */ + public Object clone() { + SerialBlob sb = null; + try { + sb = (SerialBlob) super.clone(); + sb.buf = Arrays.copyOf(buf, (int)len); + sb.blob = null; + + } catch (CloneNotSupportedException ex) { + // this shouldn't happen, since we are Cloneable + } + return sb; + } + + /** + * readObject is called to restore the state of the SerialBlob from + * a stream. + */ + private void readObject(ObjectInputStream s) + throws IOException, ClassNotFoundException { + + ObjectInputStream.GetField fields = s.readFields(); + byte[] tmp = (byte[])fields.get("buf", null); + if (tmp == null) + throw new InvalidObjectException("buf is null and should not be!"); + buf = tmp.clone(); + len = fields.get("len", 0L); + origLen = fields.get("origLen", 0L); + blob = (Blob) fields.get("blob", null); + if(buf.length != len) + throw new InvalidObjectException("buf is not the expected size"); + } + + /** + * writeObject is called to save the state of the SerialBlob + * to a stream. + */ + private void writeObject(ObjectOutputStream s) + throws IOException, ClassNotFoundException { + + ObjectOutputStream.PutField fields = s.putFields(); + fields.put("buf", buf); + fields.put("len", len); + fields.put("origLen", origLen); + fields.put("blob", null); + fields.put("blob", blob instanceof Serializable ? blob : null); + s.writeFields(); + } + /** * The identifier that assists in the serialization of this <code>SerialBlob</code> * object. */