Package org.teiid.deployers

Source Code of org.teiid.deployers.UDFMetaData

/*
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* 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.deployers;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.xml.bind.JAXBException;

import org.jboss.managed.api.annotation.ManagementObject;
import org.jboss.virtual.VirtualFile;
import org.teiid.api.exception.query.QueryMetadataException;
import org.teiid.metadata.FunctionMethod;
import org.teiid.query.QueryPlugin;
import org.teiid.query.function.metadata.FunctionMetadataReader;
import org.teiid.query.function.metadata.FunctionMetadataValidator;
import org.teiid.query.report.ActivityReport;
import org.teiid.query.report.ReportItem;
import org.teiid.runtime.RuntimePlugin;


@ManagementObject
public class UDFMetaData {
  private HashMap<String, Collection <FunctionMethod>> methods = new HashMap<String, Collection<FunctionMethod>>();
  private HashMap<String, VirtualFile> files = new HashMap<String, VirtualFile>();
 
  public void addModelFile(VirtualFile file) {
    this.files.put(file.getPathName(), file);
  }
 
 
  void buildFunctionModelFile(String name, String path) throws IOException, JAXBException, QueryMetadataException {
    for (String f:files.keySet()) {
      if (f.endsWith(path)) {
        path = f;
        break;
      }
    }
    VirtualFile file =this.files.get(path);
    if (file == null) {
      throw new IOException(RuntimePlugin.Util.getString("udf_model_not_found", name)); //$NON-NLS-1$
    }
    List<FunctionMethod> udfMethods = FunctionMetadataReader.loadFunctionMethods(file.openStream());
    ActivityReport<ReportItem> report = new ActivityReport<ReportItem>("UDF load"); //$NON-NLS-1$
    FunctionMetadataValidator.validateFunctionMethods(udfMethods,report);
    if(report.hasItems()) {
        throw new QueryMetadataException(QueryPlugin.Util.getString("ERR.015.001.0005", report)); //$NON-NLS-1$
    }
    this.methods.put(name, udfMethods);
  }
 
  public Map<String, Collection <FunctionMethod>> getFunctions(){
    return this.methods;
  }
 
  public void addFunctions(String name, Collection <FunctionMethod> funcs){
    if (funcs.isEmpty()) {
      return;
    }
    Collection <FunctionMethod> old = this.methods.put(name, funcs);
    if (old != null) {
      ArrayList<FunctionMethod> combined = new ArrayList<FunctionMethod>(old);
      combined.addAll(funcs);
      this.methods.put(name, combined);
    }
  }
 
  public void addFunctions(UDFMetaData funcs){
    for (Map.Entry<String, Collection<FunctionMethod>> entry : funcs.getFunctions().entrySet()) {
      addFunctions(entry.getKey(), entry.getValue());
    }
  } 
}
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