Package org.mvel2

Class MVELRuntime

java.lang.Object

org.mvel2.MVELRuntime

public class MVELRuntime
extends Object

This class contains the runtime for running compiled MVEL expressions.

Constructor Summary

Constructors

Constructor	Description
MVELRuntime()

Method Summary

Modifier and Type	Method	Description
static void	clearAllBreakpoints()	Reset all the currently registered breakpoints.
static Object	execute(boolean debugger, CompiledExpression expression, Object ctx, VariableResolverFactory variableFactory)	Main interpreter.
static boolean	hasBreakpoints()	Tests whether or not breakpoints have been declared.
static boolean	hasDebuggerContext()	Tests whether or not a debugger context exist.
static void	registerBreakpoint(String source, int line)	Register a debugger breakpoint.
static void	removeBreakpoint(String source, int line)	Remove a specific breakpoint.
static void	resetDebugger()	Reset all information registered in the debugger, including the actual attached Debugger and registered breakpoints.
static void	setThreadDebugger(Debugger debugger)	Sets the Debugger instance to handle breakpoints.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

MVELRuntime

public MVELRuntime()

Method Details

execute

public static Object execute(boolean debugger,
 CompiledExpression expression,
 Object ctx,
 VariableResolverFactory variableFactory)

Main interpreter.

Parameters:

debugger - Run in debug mode

expression - The compiled expression object

ctx - The root context object

variableFactory - The variable factory to be injected

Returns:

The resultant value

See Also:

• MVEL

registerBreakpoint

public static void registerBreakpoint(String source,
 int line)

Register a debugger breakpoint.

Parameters:

source - - the source file the breakpoint is registered in

line - - the line number of the breakpoint

removeBreakpoint

public static void removeBreakpoint(String source,
 int line)

Remove a specific breakpoint.

Parameters:

source - - the source file the breakpoint is registered in

line - - the line number of the breakpoint to be removed

hasDebuggerContext

public static boolean hasDebuggerContext()

Tests whether or not a debugger context exist.

Returns:

boolean

clearAllBreakpoints

public static void clearAllBreakpoints()

Reset all the currently registered breakpoints.

hasBreakpoints

public static boolean hasBreakpoints()

Tests whether or not breakpoints have been declared.

Returns:

boolean

setThreadDebugger

public static void setThreadDebugger(Debugger debugger)

Sets the Debugger instance to handle breakpoints. A debugger may only be registered once per thread. Calling this method more than once will result in the second and subsequent calls to simply fail silently. To re-register the Debugger, you must call resetDebugger()

Parameters:

debugger - - debugger instance

resetDebugger

public static void resetDebugger()

Reset all information registered in the debugger, including the actual attached Debugger and registered breakpoints.