Examples of javax.sql.rowset.serial.SerialClob.truncate()

Class javax.sql.rowset.serial.SerialClob

Examples of javax.sql.rowset.serial.SerialClob.truncate()

javax.sql.rowset.serial.SerialClob.truncate()
Truncates the CLOB value that this SerialClob object represents so that it has a length of len characters.
Truncating a SerialClob object to length 0 has the effect of clearing its contents. @param length the length, in bytes, to which the CLOBvalue should be truncated @throws SerialException if there is an error accessing theCLOB value; if the {@code free} method had been previously called on this object

        }
    }


    public void testTruncate() throws Exception {
        SerialClob serialClob = new SerialClob("hello".toCharArray());
        serialClob.truncate(3);
        assertEquals(3, serialClob.length());
        String s = serialClob.getSubString(1, 3);
        assertEquals("hel", s);
        serialClob.truncate(0);
        assertEquals(0, serialClob.length());

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        SerialClob serialClob = new SerialClob("hello".toCharArray());
        serialClob.truncate(3);
        assertEquals(3, serialClob.length());
        String s = serialClob.getSubString(1, 3);
        assertEquals("hel", s);
        serialClob.truncate(0);
        assertEquals(0, serialClob.length());


        serialClob = new SerialClob("hello".toCharArray());
        try {
            serialClob.truncate(10);

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        serialClob.truncate(0);
        assertEquals(0, serialClob.length());


        serialClob = new SerialClob("hello".toCharArray());
        try {
            serialClob.truncate(10);
            fail("should throw SerialException");
        } catch (SerialException e) {
            // expected
        }

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        } catch (SerialException e) {
            // expected
        }


        try {
            serialClob.truncate(-1);
            fail("should throw SerialException");
        } catch (SerialException e) {
            // expected
        }
    }

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        }
    }


    public void testTruncate() throws Exception {
        SerialClob serialClob = new SerialClob("hello".toCharArray());
        serialClob.truncate(3);
        assertEquals(3, serialClob.length());
        String s = serialClob.getSubString(1, 3);
        assertEquals("hel", s);
        serialClob.truncate(0);
        assertEquals(0, serialClob.length());

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        SerialClob serialClob = new SerialClob("hello".toCharArray());
        serialClob.truncate(3);
        assertEquals(3, serialClob.length());
        String s = serialClob.getSubString(1, 3);
        assertEquals("hel", s);
        serialClob.truncate(0);
        assertEquals(0, serialClob.length());


        serialClob = new SerialClob("hello".toCharArray());
        try {
            serialClob.truncate(10);

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        serialClob.truncate(0);
        assertEquals(0, serialClob.length());


        serialClob = new SerialClob("hello".toCharArray());
        try {
            serialClob.truncate(10);
            fail("should throw SerialException");
        } catch (SerialException e) {
            // expected
        }

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        } catch (SerialException e) {
            // expected
        }


        try {
            serialClob.truncate(-1);
            fail("should throw SerialException");
        } catch (SerialException e) {
            // expected
        }
    }

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