Topic.java

/*   Copyright 2012 Tim Garrett, Mothsoft LLC
 *
 *  Licensed 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 com.mothsoft.alexis.domain;

import java.util.Date;
import java.util.List;
import java.util.Set;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.OrderBy;
import javax.persistence.Table;
import javax.persistence.Version;

import org.apache.commons.lang.StringUtils;

@Entity(name = "Topic")
@Table(name = "topic")
public class Topic {

    @Id
    @GeneratedValue
    private Long id;

    @Column(name = "name")
    private String name;

    @Column(name = "search_expression", length = 255)
    private String searchExpression;

    @Column(name = "description")
    private String description;

    @Column(name = "user_id")
    private Long userId;

    @Column(name = "last_document_match_date")
    private Date lastDocumentMatchDate;

    @OneToMany(cascade = { CascadeType.ALL }, fetch = FetchType.LAZY, orphanRemoval = true)
    @JoinColumn(name = "topic_id")
    @OrderBy("score DESC")
    private List<TopicDocument> topicDocuments;

    @OneToMany(cascade = { CascadeType.ALL }, fetch = FetchType.LAZY, orphanRemoval = true)
    @JoinColumn(name = "topic_id")
    protected Set<TopicActivityDataSet> topicActivityDataSets;

    @Version
    @Column(name = "version", columnDefinition = "smallint unsigned")
    protected Integer version;

    public Topic() {
        super();
    }

    public Long getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public String getDescriptionSummary() {
        return StringUtils.abbreviate(this.description, 75);
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public String getSearchExpression() {
        return searchExpression;
    }

    public void setSearchExpression(String searchExpression) {
        this.searchExpression = searchExpression;
    }

    public Long getUserId() {
        return userId;
    }

    public void setUserId(Long userId) {
        this.userId = userId;
    }

    public Date getLastDocumentMatchDate() {
        return lastDocumentMatchDate;
    }

    public void setLastDocumentMatchDate(Date lastDocumentMatchDate) {
        this.lastDocumentMatchDate = lastDocumentMatchDate;
    }

    public List<TopicDocument> getTopicDocuments() {
        return topicDocuments;
    }

    public void setTopicDocuments(List<TopicDocument> topicDocuments) {
        this.topicDocuments = topicDocuments;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime * result + ((userId == null) ? 0 : userId.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Topic other = (Topic) obj;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        if (userId == null) {
            if (other.userId != null)
                return false;
        } else if (!userId.equals(other.userId))
            return false;
        return true;
    }

}