Hallo,
ich habe gerade angefangen mich mit JPA auseinander zu setzen. Ich habe mir 2 Entity Klassen gebaut und diese über ManyToMany miteinander verbunden. Funktioniert auch soweit.
DEmail
DUploads
Wenn ich jetzt aber den Select "SELECT e FROM DEmail e ORDER BY e.creation_date DESC" abfuere werden die zugewiesenen Uploads aus der "List<DUpload> uploads" nicht mit aufgeführt. Mein Ergbnis sieht wie folgt aus, also ohne die Uploads:
[XML]
<dEmails>
<dEmail>
<creation_date>2011-12-22T14:44:25.045+01:00</creation_date>
<creator>Andy</creator>
<email_id>151</email_id>
<email_text>test test</email_text>
<email_type>1</email_type>
<headline>testAW</headline>
<self_copy>false</self_copy>
<to_recipients>test@web.de</to_recipients>
</dEmail>
</dEmails>
[/XML]
ich möchte aber haben, dass die zugewiesenen Uploads auch aufgelistet werden. Sollte also wie folgt ausehen:
[XML]
<dEmails>
<dEmail>
<creation_date>2011-12-22T14:44:25.045+01:00</creation_date>
<creator>Andy</creator>
<email_id>151</email_id>
<email_text>test test</email_text>
<email_type>1</email_type>
<headline>testAW</headline>
<self_copy>false</self_copy>
<to_recipients>test@web.de</to_recipients>
<dUploads>
<dUpload>
<creation_date>2011-12-22T14:41:28.613+01:00</creation_date>
<creator>Andy</creator>
<edit_date>2011-12-22T14:41:28.613+01:00</edit_date>
<editor>Andy</editor>
<status>true</status>
<upload_id>1</upload_id>
<upload_link>2011_12_22_14_41_28_test.java</upload_link>
<upload_name>test</upload_name>
<upload_type>1</upload_type>
</dUpload>
<dUpload>
<creation_date>2011-12-22T14:41:28.613+01:00</creation_date>
<creator>Andy</creator>
<edit_date>2011-12-22T14:41:28.613+01:00</edit_date>
<editor>Andy</editor>
<status>true</status>
<upload_id>2</upload_id>
<upload_link>2011_12_22_14_41_28_test2.java</upload_link>
<upload_name>test2</upload_name>
<upload_type>1</upload_type>
</dUpload>
</dUploads>
</dEmail>
</dEmails>
[/XML]
Wie bekome ich das hin? Sorry ist vielleicht recht einfach zu lösen, bin aber recht neu in dem Thema JPA.
Danke
Andy
ich habe gerade angefangen mich mit JPA auseinander zu setzen. Ich habe mir 2 Entity Klassen gebaut und diese über ManyToMany miteinander verbunden. Funktioniert auch soweit.
DEmail
Java:
package com.uds.webadmin.data;
import static javax.persistence.TemporalType.TIMESTAMP;
import java.io.Serializable;
import java.util.Date;
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.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.NamedQuery;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.xml.bind.annotation.XmlRootElement;
/**
* Entity implementation class for Entity: DEmail
*/
@Entity
@XmlRootElement
@Table( name = "email_sended" )
@NamedQuery( name = "findEmails", query = "SELECT e FROM DEmail e ORDER BY e.creation_date DESC" )
public class DEmail
implements Serializable
{
@Id
@GeneratedValue( strategy = GenerationType.AUTO )
@SequenceGenerator( name = "email_sended_id_seq", sequenceName = "email_sended_id_seq", allocationSize = 1 )
@Column( columnDefinition = "SERIAL" )
private long email_id;
@Column( columnDefinition = "TEXT" )
private String to_recipients;
@Column( columnDefinition = "TEXT" )
private String cc_recipients;
@Column( columnDefinition = "TEXT" )
private String bcc_recipients;
@Column
private String headline;
@Column( columnDefinition = "TEXT" )
private String email_text;
@Column
private int email_type;
@Column
private Boolean self_copy;
@Column
private String creator;
@Column
@Temporal( TIMESTAMP )
private Date creation_date;
@ManyToMany
@JoinTable( name = "assignments_emails_uploads", joinColumns = @JoinColumn( name = "email_id", referencedColumnName = "email_id" ), inverseJoinColumns = @JoinColumn( name = "upload_id", referencedColumnName = "upload_id" ) )
private List<DUpload> uploads;
private static final long serialVersionUID = 1L;
public DEmail()
{
super();
}
public long getEmail_id()
{
return email_id;
}
public void setEmail_id( long email_id )
{
this.email_id = email_id;
}
public String getTo_recipients()
{
return to_recipients;
}
public void setTo_recipients( String to_recipients )
{
if ( to_recipients.trim().equals( "null" ) )
{
to_recipients = null;
}
this.to_recipients = to_recipients;
}
public String getCc_recipients()
{
return cc_recipients;
}
public void setCc_recipients( String cc_recipients )
{
if ( cc_recipients.trim().equals( "null" ) )
{
cc_recipients = null;
}
this.cc_recipients = cc_recipients;
}
public String getBcc_recipients()
{
return bcc_recipients;
}
public void setBcc_recipients( String bcc_recipients )
{
if ( bcc_recipients.trim().equals( "null" ) )
{
bcc_recipients = null;
}
this.bcc_recipients = bcc_recipients;
}
public String getHeadline()
{
return headline;
}
public void setHeadline( String headline )
{
if ( headline.trim().equals( "null" ) )
{
headline = null;
}
this.headline = headline;
}
public String getEmail_text()
{
return email_text;
}
public void setEmail_text( String email_text )
{
if ( email_text.trim().equals( "null" ) )
{
email_text = null;
}
this.email_text = email_text;
}
public int getEmail_type()
{
return email_type;
}
public void setEmail_type( int email_type )
{
this.email_type = email_type;
}
public Boolean getSelf_copy()
{
return self_copy;
}
public void setSelf_copy( Boolean self_copy )
{
this.self_copy = self_copy;
}
public String getCreator()
{
return creator;
}
public void setCreator( String creator )
{
this.creator = creator;
}
public Date getCreation_date()
{
return creation_date;
}
public void setCreation_date( Date creation_date )
{
this.creation_date = creation_date;
}
public List<DUpload> getUploads()
{
return uploads;
}
public void setUploads( List<DUpload> uploads )
{
this.uploads = uploads;
}
public static long getSerialversionuid()
{
return serialVersionUID;
}
public void addUpload( DUpload upload )
{
if ( !getUploads().contains( upload ) == false)
{
getUploads().add( upload );
}
if ( upload.getEmails().contains( this ) == false)
{
upload.getEmails().add( this );
}
}
public void removeUpload( DUpload upload )
{
if ( getUploads().contains( upload ) == true)
{
getUploads().remove( upload );
}
if ( upload.getEmails().contains( this ) == true)
{
upload.getEmails().remove( this );
}
}
}DUploads
Java:
package com.uds.webadmin.data;
import java.io.Serializable;
import java.lang.String;
import java.util.Date;
import java.util.List;
import javax.persistence.*;
import static javax.persistence.TemporalType.TIMESTAMP;
import javax.xml.bind.annotation.XmlRootElement;
/**
* Entity implementation class for Entity: email_uploads
*/
@Entity
@Table( name = "email_uploads" )
@XmlRootElement
@NamedQuery( name = "findUploads", query = "SELECT e FROM DUpload e ORDER BY e.creation_date DESC" )
public class DUpload
implements Serializable
{
@Id
@GeneratedValue( strategy = GenerationType.AUTO )
@SequenceGenerator( name = "email_uploads_id_seq", sequenceName = "email_uploads_id_seq", allocationSize = 1 )
@Column( columnDefinition = "SERIAL" )
private long upload_id;
@Column
private String upload_name;
@Column
private int upload_type;
@Column
private String creator;
@Column
private String upload_link;
@Column
private Boolean status;
@Column
@Temporal( TIMESTAMP )
private Date creation_date;
@Column
private String editor;
@Column
@Temporal( TIMESTAMP )
private Date edit_date;
@ManyToMany( mappedBy = "uploads" )
private List<DEmail> emails;
private static final long serialVersionUID = 1L;
public DUpload()
{
}
public DUpload( long upload_id, String upload_name, int upload_type, String creator, String upload_link,
Boolean status, Date creation_date, String editor, Date edit_date )
{
this.upload_id = upload_id;
this.upload_name = upload_name;
this.upload_type = upload_type;
this.creator = creator;
this.upload_link = upload_link;
this.status = status;
this.creation_date = creation_date;
this.editor = editor;
this.edit_date = edit_date;
}
public long getUpload_id()
{
return upload_id;
}
public void setUpload_id( long upload_id )
{
this.upload_id = upload_id;
}
public String getUpload_name()
{
return upload_name;
}
public void setUpload_name( String upload_name )
{
this.upload_name = upload_name;
}
public int getUpload_type()
{
return upload_type;
}
public void setUpload_type( int upload_type )
{
this.upload_type = upload_type;
}
public String getCreator()
{
return creator;
}
public void setCreator( String creator )
{
this.creator = creator;
}
public String getUpload_link()
{
return upload_link;
}
public void setUpload_link( String upload_link )
{
this.upload_link = upload_link;
}
public Boolean getStatus()
{
return status;
}
public void setStatus( Boolean status )
{
this.status = status;
}
public Date getCreation_date()
{
return creation_date;
}
public void setCreation_date( Date creation_date )
{
this.creation_date = creation_date;
}
public String getEditor()
{
return editor;
}
public void setEditor( String editor )
{
this.editor = editor;
}
public Date getEdit_date()
{
return edit_date;
}
public void setEdit_date( Date edit_date )
{
this.edit_date = edit_date;
}
public static long getSerialversionuid()
{
return serialVersionUID;
}
public List<DEmail> getEmails()
{
return emails;
}
public void setEmails( List<DEmail> emails )
{
this.emails = emails;
}
}Wenn ich jetzt aber den Select "SELECT e FROM DEmail e ORDER BY e.creation_date DESC" abfuere werden die zugewiesenen Uploads aus der "List<DUpload> uploads" nicht mit aufgeführt. Mein Ergbnis sieht wie folgt aus, also ohne die Uploads:
[XML]
<dEmails>
<dEmail>
<creation_date>2011-12-22T14:44:25.045+01:00</creation_date>
<creator>Andy</creator>
<email_id>151</email_id>
<email_text>test test</email_text>
<email_type>1</email_type>
<headline>testAW</headline>
<self_copy>false</self_copy>
<to_recipients>test@web.de</to_recipients>
</dEmail>
</dEmails>
[/XML]
ich möchte aber haben, dass die zugewiesenen Uploads auch aufgelistet werden. Sollte also wie folgt ausehen:
[XML]
<dEmails>
<dEmail>
<creation_date>2011-12-22T14:44:25.045+01:00</creation_date>
<creator>Andy</creator>
<email_id>151</email_id>
<email_text>test test</email_text>
<email_type>1</email_type>
<headline>testAW</headline>
<self_copy>false</self_copy>
<to_recipients>test@web.de</to_recipients>
<dUploads>
<dUpload>
<creation_date>2011-12-22T14:41:28.613+01:00</creation_date>
<creator>Andy</creator>
<edit_date>2011-12-22T14:41:28.613+01:00</edit_date>
<editor>Andy</editor>
<status>true</status>
<upload_id>1</upload_id>
<upload_link>2011_12_22_14_41_28_test.java</upload_link>
<upload_name>test</upload_name>
<upload_type>1</upload_type>
</dUpload>
<dUpload>
<creation_date>2011-12-22T14:41:28.613+01:00</creation_date>
<creator>Andy</creator>
<edit_date>2011-12-22T14:41:28.613+01:00</edit_date>
<editor>Andy</editor>
<status>true</status>
<upload_id>2</upload_id>
<upload_link>2011_12_22_14_41_28_test2.java</upload_link>
<upload_name>test2</upload_name>
<upload_type>1</upload_type>
</dUpload>
</dUploads>
</dEmail>
</dEmails>
[/XML]
Wie bekome ich das hin? Sorry ist vielleicht recht einfach zu lösen, bin aber recht neu in dem Thema JPA.
Danke
Andy
