Java tutorial
/** * * Copyright (C) 2013 Vanderbilt University <csaba.toth, b.malin @vanderbilt.edu> * * 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 org.openhie.openempi.model; import java.io.Serializable; import java.util.Date; import java.util.List; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.ManyToOne; import javax.persistence.OneToMany; import javax.persistence.OrderBy; import javax.persistence.SequenceGenerator; import javax.persistence.Table; import javax.persistence.Temporal; import javax.persistence.TemporalType; import javax.persistence.Transient; import org.apache.commons.lang.builder.HashCodeBuilder; import org.apache.commons.lang.builder.EqualsBuilder; import org.apache.commons.lang.builder.ToStringBuilder; /** * Dataset entity. * * @author <a href="mailto:csaba.toth@vanderbilt.edu">Csaba Toth</a> */ @Entity @Table(name = "dataset") @SequenceGenerator(name = "dataset_seq", sequenceName = "public.dataset_seq") public class Dataset extends BaseObject implements Serializable { private static final long serialVersionUID = 6170253797278224912L; private Integer datasetId; private User owner; private String tableName; private String fileName; private List<ColumnInformation> columnInformation; private Long totalRecords; private String imported; private Date dateCreated; public Dataset() { this.totalRecords = 0L; } public Dataset(String tableName, String fileName) { this.tableName = tableName; this.fileName = fileName; this.totalRecords = 0L; this.imported = "N"; } @Id @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "dataset_seq") @Column(name = "dataset_id", unique = true, nullable = false) public Integer getDatasetId() { return datasetId; } public void setDatasetId(Integer datasetId) { this.datasetId = datasetId; } @ManyToOne(fetch = FetchType.EAGER) @JoinColumn(name = "user_id"/*, nullable = false*/) public User getOwner() { return owner; } public void setOwner(User owner) { this.owner = owner; } @Column(name = "table_name", nullable = false) public String getTableName() { return tableName; } public void setTableName(String tableName) { this.tableName = tableName; } @Column(name = "file_name", nullable = false) public String getFileName() { return fileName; } public void setFileName(String fileName) { this.fileName = fileName; } @OneToMany(mappedBy = "dataset", cascade = CascadeType.ALL) @JoinColumn(name = "dataset_id") @OrderBy("columnInformationId") public List<ColumnInformation> getColumnInformation() { return columnInformation; } public void setColumnInformation(List<ColumnInformation> columnInformation) { this.columnInformation = columnInformation; } @Transient public void referenceThisInChildEntities() { if (columnInformation != null) { if (columnInformation.size() > 0) { for (ColumnInformation ci : columnInformation) { ci.setDataset(this); ci.hydrateAttributes(); } } } } @Column(name = "total_records") public Long getTotalRecords() { return totalRecords; } public void setTotalRecords(Long totalRecords) { this.totalRecords = totalRecords; } @Column(name = "imported_ind", nullable = false) public String getImported() { return imported; } public void setImported(String imported) { this.imported = imported; } @Temporal(TemporalType.TIMESTAMP) @Column(name = "date_created", nullable = false, length = 8) public Date getDateCreated() { return dateCreated; } public void setDateCreated(Date dateCreated) { this.dateCreated = dateCreated; } @Override public boolean equals(final Object other) { if (!(other instanceof Dataset)) return false; Dataset castOther = (Dataset) other; return new EqualsBuilder().append(datasetId, castOther.datasetId).append(owner, castOther.owner) .append(tableName, castOther.tableName).append(fileName, castOther.fileName) .append(totalRecords, castOther.totalRecords).append(imported, castOther.imported) .append(dateCreated, castOther.dateCreated).isEquals(); } @Override public int hashCode() { return new HashCodeBuilder().append(datasetId).append(owner).append(tableName).append(fileName) .append(totalRecords).append(imported).append(dateCreated).toHashCode(); } @Override public String toString() { return new ToStringBuilder(this).append("datasetId", datasetId).append("owner", owner) .append("tableName", tableName).append("fileName", fileName).append("totalRecords", totalRecords) .append("imported", imported).append("dateCreated", dateCreated).toString(); } }