org.metawidget.inspector.jpa.JpaInspectorConfig Maven / Gradle / Ivy
// Metawidget
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package org.metawidget.inspector.jpa;
import org.metawidget.inspector.impl.BaseObjectInspectorConfig;
import org.metawidget.util.simple.ObjectUtils;
/**
* Configures a JpaInspector prior to use. Once instantiated, Inspectors are immutable.
*
* @author Richard Kennard
*/
public class JpaInspectorConfig
extends BaseObjectInspectorConfig {
//
// Private members
//
private boolean mHideIds = true;
private boolean mHideVersions = true;
private boolean mHideTransients = false;
//
// Public methods
//
/**
* Sets whether the Inspector returns Id properties as hidden="true". True by
* default.
*
* JPA recommends using synthetic ids, so generally they don't appear in the UI.
*
* @return this, as part of a fluent interface
*/
public JpaInspectorConfig setHideIds( boolean hideIds ) {
mHideIds = hideIds;
// Fluent interface
return this;
}
/**
* Sets whether the Inspector returns Version properties as hidden="true". True by
* default.
*
* JPA uses these as an optimisic locking mechanism, so generally they don't appear in the UI.
*
* @return this, as part of a fluent interface
*/
public JpaInspectorConfig setHideVersions( boolean hideVersions ) {
mHideVersions = hideVersions;
// Fluent interface
return this;
}
/**
* Sets whether the Inspector returns Transient properties as hidden="true". False
* by default.
*
* There is not a firm relationship between whether a field should be persisted by JPA, and
* whether it should appear in the UI. Some architectures prefer Transient fields to be hidden
* in the UI by default, but some prefer them to be visible. The latter applies both to
* 'synthetic' fields such as getAge that calculates based off a persisted
* getDateOfBirth, and also to overridden JPA fields (which generally must be
* marked Transient in the subclass).
*
* @return this, as part of a fluent interface
*/
public JpaInspectorConfig setHideTransients( boolean hideTransients ) {
mHideTransients = hideTransients;
// Fluent interface
return this;
}
@Override
public boolean equals( Object that ) {
if ( this == that ) {
return true;
}
if ( !ObjectUtils.nullSafeClassEquals( this, that )) {
return false;
}
if ( mHideIds != ( (JpaInspectorConfig) that ).mHideIds ) {
return false;
}
if ( mHideVersions != ( (JpaInspectorConfig) that ).mHideVersions ) {
return false;
}
if ( mHideTransients != ( (JpaInspectorConfig) that ).mHideTransients ) {
return false;
}
return super.equals( that );
}
@Override
public int hashCode() {
int hashCode = super.hashCode();
hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode( mHideIds );
hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode( mHideVersions );
hashCode = 31 * hashCode + ObjectUtils.nullSafeHashCode( mHideTransients );
return hashCode;
}
//
// Protected methods
//
protected boolean isHideIds() {
return mHideIds;
}
protected boolean isHideVersions() {
return mHideVersions;
}
protected boolean isHideTransients() {
return mHideTransients;
}
}