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/*******************************************************************************
* Copyright (c) 2005 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.ds.model;
import java.io.Serializable;
import java.lang.reflect.Method;
/**
*
* This class models the reference element.
* A reference declares a dependency that a component has on a set
* of target services.
*
* @see org.eclipse.equinox.ds.resolver.Reference
*
* @version $Revision: 1.2 $
*/
public class ReferenceDescription implements Serializable {
/**
* Eclipse-generated <code>serialVersionUID</code>
*/
private static final long serialVersionUID = -6454039348113422074L;
private static final int CARDINALITY_HIGH_DEFAULT = 1;
private static final int CARDINALITY_LOW_DEFAULT = 1;
private static final String POLICY_DEFAULT = "static";
private String name;
private String interfacename;
// Cardinality indicates the number of services, matching this
// reference,
// which will bind to this Service Component. Possible values are:
// 0..1, 0..n, 1..1 (i.e. exactly one), 1..n (i.e. at least one).
// This attribute is optional. If it is not specified, then a
// cardinality
// of “1..1� is used.
private int cardinalityHigh;
private int cardinalityLow;
private String policy;
private String target;
private String bind;
private String unbind;
//Cache bind and unbind methods
transient private Method bindMethod;
transient private Method unbindMethod;
public ReferenceDescription() {
// set defaults
cardinalityHigh = CARDINALITY_HIGH_DEFAULT;
cardinalityLow = CARDINALITY_LOW_DEFAULT;
policy = POLICY_DEFAULT;
}
/**
* @return Returns the bind method.
*/
public String getBind() {
return bind;
}
/**
* @param bind The bind method.
*/
public void setBind(String bind) {
this.bind = bind;
}
/**
* @return Returns the cardinality.
*/
public int getCardinalityHigh() {
return cardinalityHigh;
}
/**
* @param cardinality
*/
public void setCardinality(String cardinality) {
if (cardinality.equals("0..1")) {
cardinalityLow = 0;
cardinalityHigh = 1;
} else if (cardinality.equals("0..n")) {
cardinalityLow = 0;
cardinalityHigh = 999999999; // infinite
} else if (cardinality.equals("1..1")) {
cardinalityLow = 1;
cardinalityHigh = 1;
} else if (cardinality.equals("1..n")) {
cardinalityLow = 1;
cardinalityHigh = 999999999;
} else {
// TODO throw exception?
}
}
/**
* @return Returns the interfacename.
*/
public String getInterfacename() {
return interfacename;
}
/**
* @param interfacename The interfacename to set.
*/
public void setInterfacename(String interfacename) {
this.interfacename = interfacename;
}
/**
* @return Returns the name.
*/
public String getName() {
return name;
}
/**
* @param name The name to set.
*/
public void setName(String name) {
this.name = name;
}
/**
* @return Returns the policy.
*/
public String getPolicy() {
return policy;
}
/**
* @param policy The policy to set.
*/
public void setPolicy(String policy) {
// TODO validate
this.policy = policy;
}
/**
* @return Returns the target.
*/
public String getTarget() {
return target;
}
/**
* @param target The target to set.
*/
public void setTarget(String target) {
// TODO validate
this.target = target;
}
/**
* @return Returns the unbind method
*/
public String getUnbind() {
return unbind;
}
/**
* @param unbind The unbind method to set.
*/
public void setUnbind(String unbind) {
this.unbind = unbind;
}
// if the cardinality is "1..1" or "1..n" then this reference is required
public boolean isRequired() {
return (cardinalityLow == 1);
}
//Cache bind and unbind methods
/**
* @return Returns the bind method.
*/
public Method getBindMethod() {
return bindMethod;
}
/**
* @param bind The bind method.
*/
public void setBindMethod(Method method) {
this.bindMethod = method;
}
/**
* @return Returns the unbind method
*/
public Method getUnbindMethod() {
return unbindMethod;
}
/**
* @param unbind The unbind method to set.
*/
public void setUnbindMethod(Method method) {
this.unbindMethod = method;
}
}
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