IntegerToLong extends IntegerToInteger { @Override public byte[] from(Object value, int length, int decimals, boolean addPadding) { if(value == null && this.defaultValue == null) { return null; } long i = value != null ? (long)value : Long.parseLong(this.defaultValue); if(i < 0) { throw new TypeConverterException("Number can not be negative"); } byte[] strBytes = Long.toString(i).getBytes(this.charset); if(strBytes.length > length) { throw new TypeConverterException("Field to small for value: " + length + " < " + strBytes.length); } if(addPadding) { strBytes = padBytes(strBytes, length); } return strBytes; }  @Override void validate(Class<?> type, int size, int decimals); @Override Object to(byte[] bytes, int offset, int length, int decimals, boolean removePadding); @Override byte[] from(Object value, int length, int decimals, boolean addPadding);  }
@Test public void testFrom() throws Exception { byte[] bytes = typeConverter.from(12147483648L, 11, -1, true); assertArrayEquals("12147483648".getBytes(StandardCharsets.UTF_8), bytes); }
@Test public void testFromOverflow() throws Exception { expectedEx.expect(TypeConverterException.class); expectedEx.expectMessage("Field to small for value"); byte[] bytes = typeConverter.from(12147483648L, 4, -1, true); }