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Complex event processing and event series analysis component
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/**************************************************************************************
 * Copyright (C) 2008 EsperTech, Inc. All rights reserved.                            *
 * http://esper.codehaus.org                                                          *
 * http://www.espertech.com                                                           *
 * ---------------------------------------------------------------------------------- *
 * The software in this package is published under the terms of the GPL license       *
 * a copy of which has been included with this distribution in the license.txt file.  *
 **************************************************************************************/
package com.espertech.esper.client.soda;

import java.io.Serializable;
import java.io.StringWriter;
import java.util.List;

/**
 * Base class for named engine objects such as views, patterns guards and observers.
 */
public abstract class EPBaseNamedObject implements Serializable
{
    private static final long serialVersionUID = 0L;

    private String namespace;
    private String name;
    private List parameters;

    /**
     * Ctor.
     */
    public EPBaseNamedObject() {
    }

    /**

     * Ctor.
     * @param namespace is the namespace of the object, i.e. view namespace or pattern object namespace
     * @param name is the name of the object, such as the view name
     * @param parameters is the optional parameters to the view or pattern object, or empty list for no parameters
     */
    public EPBaseNamedObject(String namespace, String name, List parameters)
    {
        this.namespace = namespace;
        this.name = name;
        this.parameters = parameters;
    }

    /**
     * Returns the object namespace name.
     * @return namespace name
     */
    public String getNamespace()
    {
        return namespace;
    }

    /**
     * Sets the object namespace name
     * @param namespace to set
     */
    public void setNamespace(String namespace)
    {
        this.namespace = namespace;
    }

    /**
     * Returns the object name.
     * @return object name
     */
    public String getName()
    {
        return name;
    }

    /**
     * Sets the object name.
     * @param name is the object name to set
     */
    public void setName(String name)
    {
        this.name = name;
    }

    /**
     * Returns the object parameters.
     * @return parameters for object, empty list for no parameters
     */
    public List getParameters()
    {
        return parameters;
    }

    /**
     * Sets the parameters for the object.
     * @param parameters parameters for object, empty list for no parameters
     */
    public void setParameters(List parameters)
    {
        this.parameters = parameters;
    }

    /**
     * Writes the object in EPL-syntax in the format "namespace:name(parameter, parameter, ..., parameter)"
     * @param writer to output to
     */
    public void toEPL(StringWriter writer)
    {
        writer.write(namespace);
        writer.write(':');
        writer.write(name);

        String delimiter = "";
        writer.write('(');
        for (Expression param : parameters)
        {
            writer.write(delimiter);
            param.toEPL(writer, ExpressionPrecedenceEnum.MINIMUM);
            delimiter = ", ";
        }
        writer.write(')');
    }
}