package org.lsst.ccs.localdb.statusdb.model;
   
   import java.io.Serializable;
   import java.util.ArrayList;
   import java.util.List;
   
   import javax.persistence.Column;
   import javax.persistence.Entity;
   import javax.persistence.GeneratedValue;
  import javax.persistence.GenerationType;
  import javax.persistence.Id;
  import javax.persistence.OneToMany;
  import javax.persistence.Table;
  import javax.persistence.Transient;
  
  import org.hibernate.annotations.NaturalId;
  
  @Entity
  @org.hibernate.annotations.Entity(dynamicUpdate = true, dynamicInsert = true)
  @Table(name = "datadesc")
  public class DataDesc implements Serializable {
  
  	private static final long serialVersionUID = 2636311585766032024L;
  	private long id; // can have a path
  	private String name;
  
  	// or have the path in some other metadata to build the JAS tree.
  	// ?? String path; // for JAS
  	// ?? String label; // for JAS : label as it appears in tree
  	// when JAS plotting the axes labels can still be something different.
  	// used in Fermi to have different views (shifter/engineers)
  	// TODO publish the list of all variables with a web service REST
  	@Transient
  	public String[] getPath() {
  		String[] namePath = getSrcName().split("/");
  		String[] result = new String[namePath.length + 1];
  		result[0] = getSrcSubsystem();
  		for (int i = 1; i < result.length; i++) {
  			result[i] = namePath[i - 1];
  		}
  		return result;
  	}
  
  	public static String encodePath(String[] path) {
  		// escape slashs
  		StringBuilder result = new StringBuilder();
  		for (int i = 0; i < path.length; i++) {
  			result.append('/');
  			result.append(path[i].replaceAll("/", "\\\\/"));
  		}
  		return result.toString();
  	}
  
  	public static String[] decodePath(String path) {
  		if (path.startsWith("/")) {
  			path = path.substring(1);
  		}
  		String[] elts = path.split("(?<!\\\\)/");
  		for (int i = 0; i < elts.length; i++) {
  			elts[i] = elts[i].replaceAll("\\\\/", "/");
  		}
  		return elts;
  	}
  
  	private String srcSubsystem;
  	private String srcName;
  	private int maxSamplingMillis = 0;
  	private String dataType;
  	private long preservationDelay;
  	private List<StatDesc> derived = new ArrayList<StatDesc>();
  
  	/**
  	 * @return the id
  	 */
  	@Id()
  	@GeneratedValue(strategy = GenerationType.AUTO)
  	public long getId() {
  		return id;
  	}
  
  	/**
  	 * @param id
  	 *            the id to set
  	 */
  	public void setId(long id) {
  		this.id = id;
  	}
  
  	/**
  	 * @return the name
  	 */
  	@NaturalId
  	@Column(unique = true)
  	public String getName() {
  		return name;
  	}
  
  	/**
  	 * @param name
 	 *            the name to set
 	 */
 	public void setName(String name) {
 		this.name = name;
 	}
 
 	/**
 	 * @return the srcSubsystem
 	 */
 	public String getSrcSubsystem() {
 		return srcSubsystem;
 	}
 
 	/**
 	 * @param srcSubsystem
 	 *            the srcSubsystem to set
 	 */
 	public void setSrcSubsystem(String srcSubsystem) {
 		this.srcSubsystem = srcSubsystem;
 	}
 
 	/**
 	 * @return the srcName
 	 */
 	public String getSrcName() {
 		return srcName;
 	}
 
 	/**
 	 * @param srcName
 	 *            the srcName to set
 	 */
 	public void setSrcName(String srcName) {
 		this.srcName = srcName;
 	}
 
 	/**
 	 * @return the maxSamplingMillis
 	 */
 	@Column(columnDefinition = "int default 0")
 	public int getMaxSamplingMillis() {
 		return maxSamplingMillis;
 	}
 
 	/**
 	 * @param maxSamplingMillis
 	 *            the maxSamplingMillis to set
 	 */
 	public void setMaxSamplingMillis(int maxSamplingMillis) {
 		this.maxSamplingMillis = maxSamplingMillis;
 	}
 
 	/**
 	 * @return the dataType
 	 */
 	@Column(length = 1)
 	public String getDataType() {
 		return dataType;
 	}
 
 	/**
 	 * @param dataType
 	 *            the dataType to set
 	 */
 	public void setDataType(String dataType) {
 		this.dataType = dataType;
 	}
 
 	/**
 	 * @return the preservationDelay
 	 */
 	@Column(columnDefinition = "int default 0")
 	public long getPreservationDelay() {
 		return preservationDelay;
 	}
 
 	/**
 	 * @param preservationDelay
 	 *            the preservationDelay to set
 	 */
 	public void setPreservationDelay(long preservationDelay) {
 		this.preservationDelay = preservationDelay;
 	}
 
 	/**
 	 * @return the derived
 	 */
 	@OneToMany(mappedBy = "rawDescr")
 	public List<StatDesc> getDerived() {
 		return derived;
 	}
 
 	/**
 	 * @param derived
 	 *            the derived to set
 	 */
 	public void setDerived(List<StatDesc> derived) {
 		this.derived = derived;
 	}
 }