/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.function;
import java.util.Collection;
import org.teiid.core.CoreConstants;
import org.teiid.query.QueryPlugin;
import org.teiid.query.function.metadata.FunctionMetadataValidator;
import org.teiid.query.function.source.SystemSource;
import org.teiid.query.report.ActivityReport;
public class SystemFunctionManager {
private FunctionTree systemFunctionTree;
private boolean allowEnvFunction = true;
public FunctionTree getSystemFunctions() {
if(systemFunctionTree == null) {
// Create the system source and add it to the source list
SystemSource systemSource = new SystemSource(this.allowEnvFunction);
// Validate the system source - should never fail
ActivityReport report = new ActivityReport("Function Validation"); //$NON-NLS-1$
validateSource(systemSource, report);
if(report.hasItems()) {
// Should never happen as SystemSourcTe doesn't change
System.err.println(QueryPlugin.Util.getString("ERR.015.001.0005", report)); //$NON-NLS-1$
}
systemFunctionTree = new FunctionTree(CoreConstants.SYSTEM_MODEL, systemSource, true);
}
return systemFunctionTree;
}
public FunctionLibrary getSystemFunctionLibrary() {
return new FunctionLibrary(getSystemFunctions());
}
/**
* Validate all function metadata in the source with the FunctionMetadataValidator. Add
* any problems to the specified report.
* @param source Source of function metadata
* @param report Report to update with any problems
*/
private void validateSource(FunctionMetadataSource source, ActivityReport report) {
Collection functionMethods = source.getFunctionMethods();
FunctionMetadataValidator.validateFunctionMethods(functionMethods,report);
}
public boolean isAllowEnvFunction() {
return allowEnvFunction;
}
public void setAllowEnvFunction(boolean allowEnvFunction) {
this.allowEnvFunction = allowEnvFunction;
}
}