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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
package org.apache.openoffice.ooxml.schema.automaton;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Vector;
import org.apache.openoffice.ooxml.schema.model.base.QualifiedName;
/** As there is one FA for each complex type and one for the top level elements,
* this container represents the whole set of schemas.
*/
public class FiniteAutomatonContainer
{
FiniteAutomatonContainer (final StateContainer aStateContainer)
{
maComplexTypeNameToAutomatonMap = new HashMap<>();
}
public void AddAutomaton (
final QualifiedName aElementName,
final FiniteAutomaton aAutomaton)
{
maComplexTypeNameToAutomatonMap.put(aElementName, aAutomaton);
}
public Iterable<FiniteAutomaton> GetAutomatons()
{
return maComplexTypeNameToAutomatonMap.values();
}
public int GetAutomatonCount ()
{
return maComplexTypeNameToAutomatonMap.size();
}
public Iterable<State> GetStates()
{
final Vector<State> aStates = new Vector<>();
for (final FiniteAutomaton aAutomaton : maComplexTypeNameToAutomatonMap.values())
for (final State aState : aAutomaton.GetStates())
aStates.add(aState);
return aStates;
}
public int GetStateCount()
{
int nStateCount = 0;
for (final FiniteAutomaton aAutomaton : maComplexTypeNameToAutomatonMap.values())
nStateCount += aAutomaton.GetStateCount();
return nStateCount;
}
public int GetTransitionCount ()
{
int nTransitionCount = 0;
for (final FiniteAutomaton aAutomaton : maComplexTypeNameToAutomatonMap.values())
nTransitionCount += aAutomaton.GetTransitionCount();
return nTransitionCount;
}
public FiniteAutomatonContainer CreateDFAs ()
{
final StateContainer aDFAStateContainer = new StateContainer();
final FiniteAutomatonContainer aDFAs = new FiniteAutomatonContainer(aDFAStateContainer);
for (final Entry<QualifiedName, FiniteAutomaton> aEntry : maComplexTypeNameToAutomatonMap.entrySet())
{
aDFAs.AddAutomaton(
aEntry.getKey(),
aEntry.getValue().CreateDFA(
aDFAStateContainer,
aEntry.getKey()));
}
return aDFAs;
}
public FiniteAutomatonContainer MinimizeDFAs ()
{
PrintStream aLog = null;
try
{
aLog = new PrintStream(new FileOutputStream(new File("/tmp/minimization.log")));
}
catch(Exception e)
{
e.printStackTrace();
return null;
}
final StateContainer aNewStateContainer = new StateContainer();
final FiniteAutomatonContainer aDFAs = new FiniteAutomatonContainer(aNewStateContainer);
for (final Entry<QualifiedName, FiniteAutomaton> aEntry : maComplexTypeNameToAutomatonMap.entrySet())
{
aDFAs.AddAutomaton(
aEntry.getKey(),
HopcroftMinimizer.MinimizeDFA(
aNewStateContainer,
aEntry.getValue().GetStateContext(),
aEntry.getValue().GetAttributes(),
aEntry.getValue().GetLocation(),
aLog));
}
return aDFAs;
}
public FiniteAutomaton GetTopLevelAutomaton ()
{
return maComplexTypeNameToAutomatonMap.get(null);
}
private final Map<QualifiedName, FiniteAutomaton> maComplexTypeNameToAutomatonMap;
}
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