Bug 153896 Improve the performance of BIRT datetime-converting
The current datetime converting algorithm in birt.core, xml&flatfile ODA implementations are not efficient enough.This is because we use java's SimpleDateTimeFormatter to parse ISO8601 compatible date/time values. We should write our own datatime string parser for ISO8601 datetime format.
core/org.eclipse.birt.core/src/org/eclipse/birt/core/data/DataTypeUtil.java
},
						resourceBundle );
			}
		}
		else
		{
			throw new BirtException( pluginId,
					ResourceConstants.CONVERT_FAILS,
					new Object[]{
							source.toString( ), "BigDecimal"
					},
					resourceBundle );
		}
	}
	/**
	 * Number -> Boolean
	 * 		0 		-> false
	 * 		others 	-> true
	 * String -> Boolean
	 * 		"true" 	-> true (ignore case)
	 * 		"false" -> false (ignore case)
	 * 		other string will throw an exception
	 * Date -> Boolean
	 * 		throw exception
	 * @param source
	 * @return
	 * @throws BirtException
	 */
	public static Boolean toBoolean( Object source ) throws BirtException
	{