Bug 184569 Time parameter format will affact other data item format.[0705]
Description: Time parameter format will affact other data item format. Build number:2.2.0.v20070428 Steps to reproduce: 1. New a report parameter, Time type. 2. Click Change to set format as hh:mm. 3. Drag the parameter to layout. 4. Insert a Data item, datetime type, input expression as "new Date()". 5. Preview and input 8:30 as value Expected result: Display time value and the second line display datetime value. Actual result: Both parameter and data item display time value. Error log:N/A
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ExecutionContext.java
* A list of script errors found in onPrepare. These will be added to the
	 * IReportContent, when one is available
	 * 
	 */
	private List onPrepareErrors = new ArrayList( );
	/**
	 * Flag to indicate whether task is canceled.
	 */
	private boolean isCancelled = false;
	
	/**
	 * flag to indicate if the task should be canceled on error
	 */
	private boolean cancelOnError = false;
	
	/**
	 * utilities used in the report execution.
	 */
	private HashMap stringFormatters = new HashMap( );
	private HashMap numberFormatters = new HashMap( );
	private HashMap dateFormatters = new HashMap( );
	private ClassLoader applicationClassLoader;
	
	private int MAX_ERRORS = 100;
	/**
	 * 
	 */
	private IDocArchiveReader dataSource;
	
	/**