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/**
 * Copyright 2005-2018 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.rice.kew.api.rule;

import java.io.Serializable;
import java.util.Collection;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAnyElement;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlType;
import org.kuali.rice.core.api.CoreConstants;
import org.kuali.rice.core.api.mo.AbstractDataTransferObject;
import org.kuali.rice.core.api.mo.ModelBuilder;
import org.w3c.dom.Element;

@XmlRootElement(name = RuleExpression.Constants.ROOT_ELEMENT_NAME)
@XmlAccessorType(XmlAccessType.NONE)
@XmlType(name = RuleExpression.Constants.TYPE_NAME, propOrder = {
    RuleExpression.Elements.TYPE,
    RuleExpression.Elements.EXPRESSION,
    RuleExpression.Elements.ID,
    CoreConstants.CommonElements.VERSION_NUMBER,
    CoreConstants.CommonElements.OBJECT_ID,
    CoreConstants.CommonElements.FUTURE_ELEMENTS
})
public final class RuleExpression
    extends AbstractDataTransferObject
    implements RuleExpressionContract
{

    @XmlElement(name = Elements.TYPE, required = false)
    private final String type;
    @XmlElement(name = Elements.EXPRESSION, required = false)
    private final String expression;
    @XmlElement(name = Elements.ID, required = false)
    private final String id;
    @XmlElement(name = CoreConstants.CommonElements.VERSION_NUMBER, required = false)
    private final Long versionNumber;
    @XmlElement(name = CoreConstants.CommonElements.OBJECT_ID, required = false)
    private final String objectId;
    @SuppressWarnings("unused")
    @XmlAnyElement
    private final Collection _futureElements = null;

    /**
     * Private constructor used only by JAXB.
     * 
     */
    private RuleExpression() {
        this.type = null;
        this.expression = null;
        this.id = null;
        this.versionNumber = null;
        this.objectId = null;
    }

    private RuleExpression(Builder builder) {
        this.type = builder.getType();
        this.expression = builder.getExpression();
        this.id = builder.getId();
        this.versionNumber = builder.getVersionNumber();
        this.objectId = builder.getObjectId();
    }

    @Override
    public String getType() {
        return this.type;
    }

    @Override
    public String getExpression() {
        return this.expression;
    }

    @Override
    public String getId() {
        return this.id;
    }

    @Override
    public Long getVersionNumber() {
        return this.versionNumber;
    }

    @Override
    public String getObjectId() {
        return this.objectId;
    }


    /**
     * A builder which can be used to construct {@link RuleExpression} instances.  Enforces the constraints of the {@link RuleExpressionContract}.
     * 
     */
    public final static class Builder
        implements Serializable, ModelBuilder, RuleExpressionContract
    {

        private String type;
        private String expression;
        private String id;
        private Long versionNumber;
        private String objectId;

        private Builder() {
            // TODO modify this constructor as needed to pass any required values and invoke the appropriate 'setter' methods
        }

        public static Builder create() {
            // TODO modify as needed to pass any required values and add them to the signature of the 'create' method
            return new Builder();
        }

        public static Builder create(RuleExpressionContract contract) {
            if (contract == null) {
                throw new IllegalArgumentException("contract was null");
            }
            // TODO if create() is modified to accept required parameters, this will need to be modified
            Builder builder = create();
            builder.setType(contract.getType());
            builder.setExpression(contract.getExpression());
            builder.setId(contract.getId());
            builder.setVersionNumber(contract.getVersionNumber());
            builder.setObjectId(contract.getObjectId());
            return builder;
        }

        public RuleExpression build() {
            return new RuleExpression(this);
        }

        @Override
        public String getType() {
            return this.type;
        }

        @Override
        public String getExpression() {
            return this.expression;
        }

        @Override
        public String getId() {
            return this.id;
        }

        @Override
        public Long getVersionNumber() {
            return this.versionNumber;
        }

        @Override
        public String getObjectId() {
            return this.objectId;
        }

        public void setType(String type) {
            // TODO add validation of input value if required and throw IllegalArgumentException if needed
            this.type = type;
        }

        public void setExpression(String expression) {
            // TODO add validation of input value if required and throw IllegalArgumentException if needed
            this.expression = expression;
        }

        public void setId(String id) {
            // TODO add validation of input value if required and throw IllegalArgumentException if needed
            this.id = id;
        }

        public void setVersionNumber(Long versionNumber) {
            // TODO add validation of input value if required and throw IllegalArgumentException if needed
            this.versionNumber = versionNumber;
        }

        public void setObjectId(String objectId) {
            // TODO add validation of input value if required and throw IllegalArgumentException if needed
            this.objectId = objectId;
        }

    }


    /**
     * Defines some internal constants used on this class.
     * 
     */
    static class Constants {

        final static String ROOT_ELEMENT_NAME = "ruleExpression";
        final static String TYPE_NAME = "RuleExpressionType";

    }


    /**
     * A private class which exposes constants which define the XML element names to use when this object is marshalled to XML.
     * 
     */
    static class Elements {

        final static String TYPE = "type";
        final static String EXPRESSION = "expression";
        final static String ID = "id";

    }

}