Examples with OptionalTool org.apache.derby.iapi.sql.dictionary.OptionalTool used on opensource projects

Example 1 with OptionalTool

use of org.apache.derby.iapi.sql.dictionary.OptionalTool in project derby by apache.

the class Java5SystemProcedures method SYSCS_REGISTER_TOOL.

// /////////////////////////////////////////////////////////////////////////////////
// 
// PUBLIC BEHAVIOR
// 
// /////////////////////////////////////////////////////////////////////////////////
/**
 * <p>
 * Load or unload an optional tool package. If the tool name is the special
 * CUSTOM_TOOL_CLASS_NAME tool, then the first optionalArg is the name
 * of a user-supplied class which implements OptionalTool.
 * </p>
 *
 * @param toolName  Name of the tool package.
 * @param register  True if the package should be loaded, false otherwise.
 * @param optionalArgs  Tool-specific configuration parameters.
 */
public static void SYSCS_REGISTER_TOOL(String toolName, boolean register, String... optionalArgs) throws SQLException {
    try {
        ClassFactoryContext cfc = (ClassFactoryContext) getContext(ClassFactoryContext.CONTEXT_ID);
        ClassFactory classFactory = cfc.getClassFactory();
        String toolClassName = findToolClassName(toolName, optionalArgs);
        OptionalTool tool = null;
        Class<?> toolClass;
        try {
            toolClass = classFactory.loadApplicationClass(toolClassName);
        } catch (ClassNotFoundException cnfe) {
            throw wrap(cnfe);
        }
        if (!OptionalTool.class.isAssignableFrom(toolClass)) {
            throw badCustomTool(toolClassName);
        }
        try {
            tool = (OptionalTool) toolClass.getConstructor().newInstance();
        } catch (InstantiationException ie) {
            throw wrap(ie);
        } catch (IllegalAccessException iae) {
            throw wrap(iae);
        } catch (NoSuchMethodException ie) {
            throw wrap(ie);
        } catch (java.lang.reflect.InvocationTargetException iae) {
            throw wrap(iae);
        }
        // Strip the custom tool class name from the optional args as necessary
        if (CUSTOM_TOOL_CLASS_NAME.equals(toolName)) {
            optionalArgs = stripCustomClassName(optionalArgs);
        }
        if (register) {
            tool.loadTool(optionalArgs);
        } else {
            tool.unloadTool(optionalArgs);
        }
    } catch (StandardException se) {
        throw PublicAPI.wrapStandardException(se);
    }
}