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/*
* Copyright (c) 1997, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package javax.faces.event;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.faces.FacesException;
/**
* Typesafe enumeration of
* the legal values that may be returned by the
* getPhaseId() method of the {@link FacesEvent} interface.
*/
public class PhaseId implements Comparable {
// ----------------------------------------------------------- Constructors
/**
*
Private constructor to disable the creation of new instances.
*/
private PhaseId(String newPhaseName) {
phaseName = newPhaseName;
}
// ----------------------------------------------------- Instance Variables
/**
* The ordinal value assigned to this instance.
*/
private final int ordinal = nextOrdinal++;
/**
* The (optional) name for this phase.
*/
private String phaseName = null;
// --------------------------------------------------------- Public Methods
/**
* Compare this {@link PhaseId} instance to the specified one.
* Returns a negative integer, zero, or a positive integer if this
* object is less than, equal to, or greater than the specified object.
*
* @param other The other object to be compared to
*/
@Override
public int compareTo(Object other) {
return this.ordinal - ((PhaseId) other).ordinal;
}
/**
* Return the ordinal value of this {@link PhaseId} instance.
*
* @return the ordinal
*/
public int getOrdinal() {
return (this.ordinal);
}
/**
* Return a String representation of this {@link PhaseId} instance.
*/
@Override
public String toString() {
if (null == phaseName) {
return (String.valueOf(this.ordinal));
}
return (String.valueOf(this.phaseName) + ' ' + this.ordinal);
}
/**
* Return the name of this phase.
*
* @since 2.2
*
* @return the name
*/
public String getName() {
return this.phaseName;
}
/**
* Return a PhaseId
* representation of the arcument phase.
*
* @param phase the String for which the corresponding
* PhaseId should be returned.
*
* @throws NullPointerException if argument phase is
* null.
*
* @throws FacesException if the PhaseId
* corresponding to the argument phase cannot be found.
*
* @since 2.2
*
* @return the phase id corresponding to the argument {@code phase}
*/
public static PhaseId phaseIdValueOf(String phase) {
if (null == phase) {
throw new NullPointerException();
}
PhaseId result = null;
if (ANY_PHASE_NAME.equals(phase)) {
result = PhaseId.ANY_PHASE;
} else if (APPLY_REQUEST_VALUES_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.APPLY_REQUEST_VALUES;
} else if (INVOKE_APPLICATION_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.INVOKE_APPLICATION;
} else if (PROCESS_VALIDATIONS_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.PROCESS_VALIDATIONS;
} else if (RENDER_RESPONSE_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.RENDER_RESPONSE;
} else if (RESTORE_VIEW_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.RESTORE_VIEW;
} else if (UPDATE_MODEL_VALUES_NAME.equalsIgnoreCase(phase)) {
result = PhaseId.UPDATE_MODEL_VALUES;
} else {
throw new FacesException("Not a valid phase [" + phase + "]");
}
return result;
}
// ------------------------------------------------------- Static Variables
/**
* Static counter returning the ordinal value to be assigned to the
* next instance that is created.
*/
private static int nextOrdinal = 0;
// ------------------------------------------------------ Create Instances
// Any new Phase values must go at the end of the list, or we will break
// backwards compatibility on serialized instances
private static final String ANY_PHASE_NAME = "ANY";
/**
* Identifier that indicates an interest in events, no matter
* which request processing phase is being performed.
*/
public static final PhaseId ANY_PHASE = new PhaseId(ANY_PHASE_NAME);
private static final String RESTORE_VIEW_NAME = "RESTORE_VIEW";
/**
* Identifier that indicates an interest in events queued for
* the Restore View phase of the request
* processing lifecycle.
*/
public static final PhaseId RESTORE_VIEW = new PhaseId(RESTORE_VIEW_NAME);
private static final String APPLY_REQUEST_VALUES_NAME = "APPLY_REQUEST_VALUES";
/**
* Identifier that indicates an interest in events queued for
* the Apply Request Values phase of the request
* processing lifecycle.
*/
public static final PhaseId APPLY_REQUEST_VALUES = new PhaseId(APPLY_REQUEST_VALUES_NAME);
private static final String PROCESS_VALIDATIONS_NAME = "PROCESS_VALIDATIONS";
/**
* Identifier that indicates an interest in events queued for
* the Process Validations phase of the request
* processing lifecycle.
*/
public static final PhaseId PROCESS_VALIDATIONS = new PhaseId(PROCESS_VALIDATIONS_NAME);
private static final String UPDATE_MODEL_VALUES_NAME = "UPDATE_MODEL_VALUES";
/**
* Identifier that indicates an interest in events queued for
* the Update Model Values phase of the request
* processing lifecycle.
*/
public static final PhaseId UPDATE_MODEL_VALUES = new PhaseId(UPDATE_MODEL_VALUES_NAME);
private static final String INVOKE_APPLICATION_NAME = "INVOKE_APPLICATION";
/**
* Identifier that indicates an interest in events queued for
* the Invoke Application phase of the request
* processing lifecycle.
*/
public static final PhaseId INVOKE_APPLICATION = new PhaseId(INVOKE_APPLICATION_NAME);
private static final String RENDER_RESPONSE_NAME = "RENDER_RESPONSE";
/**
* Identifier for the Render Response phase of the
* request processing lifecycle.
*/
public static final PhaseId RENDER_RESPONSE = new PhaseId(RENDER_RESPONSE_NAME);
/**
* Array of all defined values, ascending order of ordinal value.
* Be sure you include any new instances created above, in the
* same order.
*/
private static final PhaseId[] values =
{ANY_PHASE, RESTORE_VIEW, APPLY_REQUEST_VALUES,
PROCESS_VALIDATIONS, UPDATE_MODEL_VALUES, INVOKE_APPLICATION, RENDER_RESPONSE};
/**
* List of valid {@link PhaseId} instances, in ascending order
* of their ordinal value.
*/
public static final List VALUES =
Collections.unmodifiableList(Arrays.asList(values));
}