public void helpTest(Expression srcExpression, String tgtType, String expectedExpression)
throws Exception {
Function func =
LANG_FACTORY.createFunction(
"convert", //$NON-NLS-1$
Arrays.asList(srcExpression, LANG_FACTORY.createLiteral(tgtType, String.class)),
TypeFacility.getDataTypeClass(tgtType));
assertEquals(
"Error converting from " + srcExpression.getType() + " to " + tgtType,
expectedExpression,
helpGetString(func));
}
@Test
public void testStringToTimestamp() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("2004-06-29 23:59:59.987", String.class),
"timestamp",
"to_timestamp('2004-06-29 23:59:59.987', 'YYYY-MM-DD HH24:MI:SS.MS')");
}
@Test
public void testStringToTime() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("23:59:59", String.class),
"time",
"to_timestamp('23:59:59', 'HH24:MI:SS')");
}
@Test
public void testBigIntegerToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new BigInteger("1"), BigInteger.class),
"boolean",
"CASE WHEN 1 = 0 THEN '0' WHEN 1 IS NOT NULL THEN '1' END");
}
@Test
public void testStringToBigInteger() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("5", String.class),
"biginteger",
"cast('5' AS numeric(38))"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
}
@Test
public void testShortToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Short((short) 1), Short.class),
"string",
"cast(1 AS varchar(4000))");
}
@Test
public void testByteToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Byte((byte) 1), Byte.class),
"boolean",
"CASE WHEN 1 = 0 THEN '0' WHEN 1 IS NOT NULL THEN '1' END");
}
@Test
public void testByteToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Byte((byte) 1), Byte.class),
"string",
"cast(1 AS varchar(4000))");
}
@Test
public void testBooleanToBigDecimal() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(Boolean.FALSE, Boolean.class),
"bigdecimal",
"(CASE WHEN 0 IN ( '0', 'FALSE') THEN 0 WHEN 0 IS NOT NULL THEN 1 END)");
}
@Test
public void testShortToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Short((short) 1), Short.class),
"boolean",
"CASE WHEN 1 = 0 THEN '0' WHEN 1 IS NOT NULL THEN '1' END");
}
@Test
public void testFloatToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Float(1.2f), Float.class),
"string",
"cast(1.2 AS varchar(4000))");
}
@Test
public void testFloatToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Float(1.2f), Float.class),
"boolean",
"CASE WHEN 1.2 = 0 THEN '0' WHEN 1.2 IS NOT NULL THEN '1' END");
}
@Test
public void testBigDecimalToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new BigDecimal("1.0"), BigDecimal.class),
"string",
"cast(1.0 AS varchar(4000))");
}
@Test
public void testStringToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("5", String.class),
"boolean",
"CASE WHEN '5' IN ('false', '0') THEN '0' WHEN '5' IS NOT NULL THEN '1' END");
}
@Test
public void testBigDecimalToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new BigDecimal("1.0"), BigDecimal.class),
"boolean",
"CASE WHEN 1.0 = 0 THEN '0' WHEN 1.0 IS NOT NULL THEN '1' END");
}
@Test
public void testDoubleToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Double(1.2), Double.class),
"string",
"cast(1.2 AS varchar(4000))");
}
@Test
public void testDoubleToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Double(1.2), Double.class),
"boolean",
"CASE WHEN 1.2 = 0 THEN '0' WHEN 1.2 IS NOT NULL THEN '1' END");
}
@Test
public void testBooleanToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(Boolean.TRUE, Boolean.class),
"string",
"CASE WHEN 1 = '0' THEN 'false' WHEN 1 IS NOT NULL THEN 'true' END");
}
@Test
public void testStringToDate() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("2004-06-29", String.class),
"date",
"to_date('2004-06-29', 'YYYY-MM-DD')");
}
@Test
public void testBigIntegerToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new BigInteger("1"), BigInteger.class),
"string",
"cast(1 AS varchar(4000))");
}
@Test
public void testLongToBoolean() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Long(1), Long.class),
"boolean",
"CASE WHEN 1 = 0 THEN '0' WHEN 1 IS NOT NULL THEN '1' END");
}
@Test
public void testStringToInteger() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "integer", "cast('5' AS integer)");
}
@Test
public void testStringToShort() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "short", "cast('5' AS smallint)");
}
@Test
public void testStringToByte() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "byte", "cast('5' AS byteint)");
}
// Source = STRING
@Test
public void testStringToChar() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "char", "cast('5' AS char(1))");
}
@Test
public void testStringToBigDecimal() throws Exception {
helpTest(
LANG_FACTORY.createLiteral("5", String.class), "bigdecimal", "cast('5' AS numeric(38,18))");
}
@Test
public void testStringToLong() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "long", "cast('5' AS bigint)");
}
@Test
public void testLongToString() throws Exception {
helpTest(
LANG_FACTORY.createLiteral(new Long(1), Long.class), "string", "cast(1 AS varchar(4000))");
}
@Test
public void testStringToDouble() throws Exception {
helpTest(LANG_FACTORY.createLiteral("5", String.class), "double", "cast('5' AS double)");
}
@Test
public void testCharToString() throws Exception {
helpTest(LANG_FACTORY.createLiteral(new Character('5'), Character.class), "string", "'5'");
}
