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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.ode.bpel.memdao;

import org.apache.ode.bpel.dao.CorrelationSetDAO;
import org.apache.ode.bpel.dao.PartnerLinkDAO;
import org.apache.ode.bpel.dao.ScopeDAO;
import org.apache.ode.bpel.dao.ScopeStateEnum;
import org.apache.ode.bpel.dao.XmlDataDAO;
import org.apache.ode.bpel.evt.BpelEvent;

import java.util.*;

/**
 * A very simple, in-memory implementation of the {@link ScopeDAO} interface.
 */
class ScopeDaoImpl extends DaoBaseImpl implements ScopeDAO {
    private String _type;
    private ScopeStateEnum _state;
    private Map _variables = new HashMap();
    private Map _correlations = new HashMap();
    private Map _eprs = new HashMap();
    private ProcessInstanceDaoImpl _processInstance;
    private org.apache.ode.bpel.dao.ScopeDAO _parent;
    private Long _instanceId;
    private int _scopeModelId;

    /**
     * Constructor.
     * @param owner process instance owner
     * @param parent scope parent
     * @param type scope type (name)
     * @param scopeModelId
     */
    public ScopeDaoImpl(ProcessInstanceDaoImpl owner, ScopeDAO parent, String type, int scopeModelId) {
        _processInstance = owner;
        _parent = parent;
        _type = type;
        _instanceId = IdGen.newScopeId();
        _scopeModelId = scopeModelId;
    }


    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getCorrelationSet(java.lang.String)
     */
    public CorrelationSetDAO getCorrelationSet(String corrSetName) {
        CorrelationSetDAO corr = _correlations.get(corrSetName);

        if (corr == null) {
            corr = new CorrelationSetDaoImpl(corrSetName, this);
            _correlations.put(corrSetName, corr);
        }

        return corr;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getParentScope()
     */
    public org.apache.ode.bpel.dao.ScopeDAO getParentScope() {
        return _parent;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getProcessInstance()
     */
    public org.apache.ode.bpel.dao.ProcessInstanceDAO getProcessInstance() {
        return _processInstance;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#setState(org.apache.ode.bpel.dao.ScopeStateEnum)
     */
    public void setState(org.apache.ode.bpel.dao.ScopeStateEnum state) {
        _state = state;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getState()
     */
    public org.apache.ode.bpel.dao.ScopeStateEnum getState() {
        return _state;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getName()
     */
    public String getName() {
        return _type;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getVariable(java.lang.String)
     */
    public XmlDataDAO getVariable(String varName) {
        XmlDataDAO v = _variables.get(varName);

        if (v == null) {
            v = new XmlDataDaoImpl(this,varName);
            _variables.put(varName, v);
        }

        return v;
    }

    public Collection getCorrelationSets() {
        return _correlations.values();
    }

    public void setCorrelationSets(List correlationSet) {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getScopeInstanceId()
     */
    public Long getScopeInstanceId() {
        return _instanceId;
    }

    /**
     * @see org.apache.ode.bpel.dao.ScopeDAO#getModelId()
     */
    public int getModelId() {
        return _scopeModelId;
    }

    public Collection getChildScopes() {
        // TODO Auto-generated method stub
        throw new UnsupportedOperationException();
    }

    public void setChildScopes(Collection childrens) {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public boolean isChildrenExist() {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public Collection getVariables() {
        return _variables.values();
    }

    public void setVariables(List variables) {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public List listEvents() {
        // TODO: provide a better implementation.
        return new ArrayList();
    }

    public PartnerLinkDAO createPartnerLink(int plinkModelId, String pLinkName, String myRole, String partnerRole) {
        PartnerLinkDAOImpl eprImpl = new PartnerLinkDAOImpl();
        eprImpl.setPartnerLinkModelId(plinkModelId);
        eprImpl.setPartnerLinkName(pLinkName);
        eprImpl.setMyRoleName(myRole);
        eprImpl.setPartnerRoleName(partnerRole);
        _eprs.put(plinkModelId, eprImpl);
        return eprImpl;
    }

    public PartnerLinkDAO getPartnerLink(int modelId) {
        return _eprs.get(modelId);
    }

    public Collection getPartnerLinks() {
        return _eprs.values();
    }

    public boolean isParentExist() {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public Set getCorrelationDTOs() {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public Set getVariablesDTOs() {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

    public void addCorrelationSet() {
        throw new UnsupportedOperationException("This method is not implemented in this version of the ODE");
    }

}