Examples of org.postgresql.core.Encoding.decode()

org.postgresql.core.Encoding.decode()
Decode an array of bytes into a string. @param encodedString a bytearray containing the encoded string the string to encod @param offset the offset in encodedString of the first byte of the encoded representation @param length the length, in bytes, of the encoded representation @return the decoded string @throws IOException if something goes wrong

                testString = new String(new char[] { (char)ch });
            }
            
            byte[] jvmEncoding = testString.getBytes("UTF-8");
            String jvmDecoding = new String(jvmEncoding, 0, jvmEncoding.length, "UTF-8");
            String ourDecoding = utf8Encoding.decode(jvmEncoding, 0, jvmEncoding.length);
            
            assertEquals("Test string: " + dumpString(testString), dumpString(testString), dumpString(jvmDecoding));
            assertEquals("Test string: " + dumpString(testString), dumpString(testString), dumpString(ourDecoding));
        }
    }

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        byte[] paddedSequence = new byte[32];
        for (int i = 0; i < badSequences.length; ++i) {
            byte[] sequence = badSequences[i];
            
            try {
                String str = utf8Encoding.decode(sequence, 0, sequence.length);
                fail("Expected an IOException on sequence " + i + ", but decoded to <" + str + ">");
            } catch (IOException ioe) {
                // Expected exception.
            }

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            // Try it with padding.
            Arrays.fill(paddedSequence, (byte)0);
            System.arraycopy(sequence, 0, paddedSequence, 0, sequence.length);
            
            try {
                String str = utf8Encoding.decode(paddedSequence, 0, paddedSequence.length);
                fail("Expected an IOException on sequence " + i + ", but decoded to <" + str + ">");
            } catch (IOException ioe) {
                // Expected exception.
            }
        }

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        byte[] paddedSequence = new byte[32];
        for (int i = 0; i < shortSequences.length; ++i) {
            byte[] sequence = shortSequences[i];
            
            try {
                String str = utf8Encoding.decode(sequence, 0, sequence.length);
                fail("Expected an IOException on sequence " + i + ", but decoded to <" + str + ">");
            } catch (IOException ioe) {
                // Expected exception.
            }

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            // Try it with padding and a truncated length.
            Arrays.fill(paddedSequence, (byte)0);
            System.arraycopy(sequence, 0, paddedSequence, 0, sequence.length);
            
            try {
                String str = utf8Encoding.decode(paddedSequence, 0, sequence.length);
                fail("Expected an IOException on sequence " + i + ", but decoded to <" + str + ">");
            } catch (IOException ioe) {
                // Expected exception.
            }
        }

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    }


    public void testTransformations() throws Exception
    {
        Encoding encoding = Encoding.getDatabaseEncoding("UNICODE");
        assertEquals("ab", encoding.decode(new byte[] { 97, 98 }));


        assertEquals(2, encoding.encode("ab").length);
        assertEquals(97, encoding.encode("a")[0]);
        assertEquals(98, encoding.encode("b")[0]);

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        assertEquals(98, encoding.encode("b")[0]);


        encoding = Encoding.defaultEncoding();
        assertEquals("a".getBytes()[0], encoding.encode("a")[0]);
        assertEquals(new String(new byte[] { 97 }),
                     encoding.decode(new byte[] { 97 }));
    }


    public void testReader() throws Exception
    {
        Encoding encoding = Encoding.getDatabaseEncoding("SQL_ASCII");

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    }


    public void testTransformations() throws Exception
    {
        Encoding encoding = Encoding.getDatabaseEncoding("UNICODE");
        assertEquals("ab", encoding.decode(new byte[] { 97, 98 }));


        assertEquals(2, encoding.encode("ab").length);
        assertEquals(97, encoding.encode("a")[0]);
        assertEquals(98, encoding.encode("b")[0]);

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        assertEquals(98, encoding.encode("b")[0]);


        encoding = Encoding.defaultEncoding();
        assertEquals("a".getBytes()[0], encoding.encode("a")[0]);
        assertEquals(new String(new byte[] { 97 }),
                     encoding.decode(new byte[] { 97 }));
    }


    public void testReader() throws Exception
    {
        Encoding encoding = Encoding.getDatabaseEncoding("SQL_ASCII");

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    }


    public void testTransformations() throws Exception
    {
        Encoding encoding = Encoding.getDatabaseEncoding("UTF8");
        assertEquals("ab", encoding.decode(new byte[] { 97, 98 }));


        assertEquals(2, encoding.encode("ab").length);
        assertEquals(97, encoding.encode("a")[0]);
        assertEquals(98, encoding.encode("b")[0]);

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