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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.iapi;

import java.io.File;
import java.io.InputStream;
import java.net.URI;
import java.util.ArrayList;
import java.util.Date;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.wsdl.Definition;
import javax.xml.namespace.QName;

import org.apache.ode.bpel.evt.BpelEvent;
import org.apache.ode.bpel.o.OFailureHandling;
import org.apache.ode.bpel.iapi.Scheduler.JobDetails;
import org.apache.ode.utils.CronExpression;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

/**
 * Deployed process configuration. IMPORTANT: Implementations of this class MUST BE IMMUTABLE,
 * otherwise the engine will get confused.
 *
 * @author mriou 
 */
public interface ProcessConf {

    public static class PartnerRoleConfig {
        public final OFailureHandling failureHandling;
        public final boolean usePeer2Peer;

        public PartnerRoleConfig(OFailureHandling failureHandling, boolean usePeer2Peer) {
            super();
            this.failureHandling = failureHandling;
            this.usePeer2Peer = usePeer2Peer;
        }
    }

    /**
     * Get the process id, generally the same as the type.
     * @return process id.
     */
    QName getProcessId();

    /**
     * Get the process type (BPEL definition name).
     * @return
     */
    QName getType();

    /**
     * Get the process version.
     * @return version
     */
    long getVersion();

    /**
     * Is this a transient process? Transient processes are not persisted in the store.
     * @return true if this is a transient process.
     */
    boolean isTransient();

    /**
     * Get the CBP stream.
     * @return new stream to the CBP file.
     */
    InputStream getCBPInputStream();

    /**
     * Get the CBP file size.
     * @return size of the CBP file.
     */
    long getCBPFileSize();

    /**
     * Get the path of the BPEL document, relative to its deployment unit
     * @return Relative path of BPEL document
     */
    String getBpelDocument();

    /**
     * Get the base URL for resolving resources.
     */
    URI getBaseURI();

    /**
     * Get the date of deployment.
     * @return
     */
    Date getDeployDate();

    /**
     * Get the userid of the deployer.
     * @return
     */
    String getDeployer();

    /**
     * Get the state of the process.
     * @return process state.
     */
    ProcessState getState();


    /**
     * Get the files associated with the deployment.
     * @return
     */
    List getFiles();

    /**
     * Get the process properties.
     * @return
     */
    Map getProcessProperties();

    /**
     * Gets the name of the package into which the process is deployed.
     * @return package name
     */
    String getPackage();

    /**
     * Gets the WSDL definition used in a process into which a service is defined.
     * @param processId
     * @param serviceName
     * @return definition
     */
    Definition getDefinitionForService(QName serviceName);

    /**
     * Gets the WSDL definition used in a process into which a PortType is defined.
     * @param portTypeName
     * @return definition
     */
    Definition getDefinitionForPortType(QName portTypeName);

    /**
     * Gets the list of endpoints a process should provide.
     * @param processId
     * @return map of partner link names and associated enpoints
     */
    Map getProvideEndpoints();

    /**
     * Gets the list of endpoints a process invokes.
     * @param processId
     * @return map of partner link names and associated enpoints
     */
    Map getInvokeEndpoints();

    /**
     * Returns failure handling info for invokes.
     * @return
     */
    public Map getPartnerRoleConfig();

    /**
     * Tells if the service is shareable
     * @param serviceName
     * @return true if the given service can be shared by processes
     */
    boolean isSharedService(QName serviceName);

    /**
     * Generic facility to get additional stuff out of the process descriptor.
     * @param qname name of the extension element.
     * @return list of extension elements
     */
    List getExtensionElement(QName qname);

    boolean isEventEnabled(List scopeNames, BpelEvent.TYPE type);

    public Map getEndpointProperties(EndpointReference epr);

    boolean isCleanupCategoryEnabled(boolean instanceSucceeded, CLEANUP_CATEGORY category);

    Set getCleanupCategories(boolean instanceSucceeded);

    List getCronJobs();

    public enum CLEANUP_CATEGORY {
        INSTANCE,
        VARIABLES,
        MESSAGES,
        CORRELATIONS,
        EVENTS;

        public static CLEANUP_CATEGORY fromString(String lowerCase) {
            return valueOf(CLEANUP_CATEGORY.class, lowerCase.toUpperCase());
        }
    }

    public class CronJob {
        private CronExpression _cronExpression;

        private final List runnableDetailList = new ArrayList();

        public void setCronExpression(CronExpression _cronExpression) {
            this._cronExpression = _cronExpression;
        }

        public CronExpression getCronExpression() {
            return _cronExpression;
        }

        public List getRunnableDetailList() {
            return runnableDetailList;
        }

        public String toString() {
            StringBuffer buf = new StringBuffer();

            buf.append("Cron[");
            buf.append(_cronExpression);
            buf.append("] ");
            buf.append(runnableDetailList);

            return buf.toString();
        }
    }

    public class CleanupInfo implements java.io.Serializable {
        private List _filters = new ArrayList();

        private final Set _categories = EnumSet.noneOf(CLEANUP_CATEGORY.class);

        public void setFilters(List filters) {
            _filters = filters;
        }

        public List getFilters() {
            return _filters;
        }

        public Set getCategories() {
            return _categories;
        }

        public String toString() {
            StringBuffer buf = new StringBuffer();

            buf.append("CleanupInfo: filters=");
            buf.append(_filters);
            buf.append(", categories=");
            buf.append(_categories);

            return buf.toString();
        }
    }

    /**
     * Get the name of the correlation filter defined for the partner link
     * @param partnerLinkName PartnerLink name
     * @return If a filter is defined, Qname of the Filter. If not returns null
     */
    public QName getCorrelationFilter(String partnerLinkName);
}