1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/delegatingwriterfinal/src-api1.0/api/Writer.java	Sat Jun 14 09:53:06 2008 +0200
     1.3 @@ -0,0 +1,96 @@
     1.4 +package api;
     1.5 +
     1.6 +import java.io.BufferedWriter;
     1.7 +import java.io.IOException;
     1.8 +
     1.9 +/** Fixing the problem caused by mixing subclassing and delegation in 
    1.10 + * the <code>java.io.BufferedWriter</code>
    1.11 + *
    1.12 + * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
    1.13 + */
    1.14 +public final class Writer {
    1.15 +    private final Impl impl;
    1.16 +    
    1.17 +    private Writer(Impl impl) {
    1.18 +        this.impl = impl;
    1.19 +    }
    1.20 +    public final void write(int c) throws IOException {
    1.21 +        char[] arr = { (char)c };
    1.22 +        impl.write(arr, 0, 1);
    1.23 +    }
    1.24 +    
    1.25 +    public final void write(char cbuf[]) throws IOException {
    1.26 +	impl.write(cbuf, 0, cbuf.length);
    1.27 +    }
    1.28 +    public final void write(char cbuf[], int off, int len) throws IOException {
    1.29 +        impl.write(cbuf, off, len);
    1.30 +    }
    1.31 +    public final void write(String str) throws IOException {
    1.32 +	impl.write(str, 0, str.length());
    1.33 +    }
    1.34 +    public final void write(String str, int off, int len) throws IOException {
    1.35 +        impl.write(str, off, len);
    1.36 +    }
    1.37 +    public final void flush() throws IOException {
    1.38 +        impl.flush();
    1.39 +    }
    1.40 +    public final void close() throws IOException {
    1.41 +        impl.close();
    1.42 +    }
    1.43 +
    1.44 +    public static Writer create(Impl impl) {
    1.45 +        return new Writer(impl);
    1.46 +    }
    1.47 +    
    1.48 +    public static Writer create(final java.io.Writer w) {
    1.49 +        return new Writer(new Impl() {
    1.50 +            public void write(String str, int off, int len) throws IOException {
    1.51 +                w.write(str, off, len);
    1.52 +            }
    1.53 +
    1.54 +            public void write(char[] arr, int off, int len) throws IOException {
    1.55 +                w.write(arr, off, len);
    1.56 +            }
    1.57 +
    1.58 +            public void close() throws IOException {
    1.59 +                w.close();
    1.60 +            }
    1.61 +
    1.62 +            public void flush() throws IOException {
    1.63 +                w.flush();
    1.64 +            }
    1.65 +        });
    1.66 +    }
    1.67 +    
    1.68 +    public static Writer createBuffered(final Writer out) {
    1.69 +        class Delegate extends java.io.Writer {
    1.70 +            @Override
    1.71 +            public void write(char[] cbuf, int off, int len) throws IOException {
    1.72 +                out.write(cbuf, off, len);
    1.73 +            }
    1.74 +
    1.75 +            @Override
    1.76 +            public void flush() throws IOException {
    1.77 +                out.flush();
    1.78 +            }
    1.79 +
    1.80 +            @Override
    1.81 +            public void close() throws IOException {
    1.82 +                out.close();
    1.83 +            }
    1.84 +            
    1.85 +        }
    1.86 +        return create(new BufferedWriter(new Delegate()));
    1.87 +    }
    1.88 +
    1.89 +    
    1.90 +    public static interface Impl {
    1.91 +        public void close() throws IOException;
    1.92 +        public void flush() throws IOException;
    1.93 +        public void write(String str, int off, int len) throws IOException;
    1.94 +        public void write(char[] arr, int off, int len) throws IOException;
    1.95 +    }
    1.96 +    
    1.97 +    
    1.98 +    
    1.99 +}