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package com.sun.appserv.web.cache.mapping;
import com.sun.appserv.web.cache.CacheHelper;
/** CacheMapping represents a cache target specified via servlet-name or a
* url-pattern, a timeout, allowed methods, a set of key fields to be used to
* construct the key into the cache, and a set of constraints on the field
* values.
*/
public class CacheMapping {
private String helperNameRef;
private String servletName;
private String urlPattern;
// timeout specified value or via Field
private int timeout = CacheHelper.TIMEOUT_VALUE_NOT_SET;
private Field timeoutField = null;
// a field to force caching engine to refresh entry
private Field refreshField = null;
// set of standard HTTP methods eligible for caching
private String methods[] = new String[0];
// components of the key to be used to access the cache.
private Field keyFields[] = new Field[0];
// additional cache constraints
private ConstraintField constraintFields[] = new ConstraintField[0];
/** default cache mapping
*/
public CacheMapping() {
}
// public config getters and setters
/**
* set the helper name ref associated with this cache mapping
* @param helperNameRef helper name ref for this cache mapping
*/
public void setHelperNameRef(String helperNameRef) {
this.helperNameRef = helperNameRef;
}
/** set the servlet-name this mapping applies
* @param servletName name of the servlet
*/
public void setServletName(String servletName) {
this.servletName = servletName;
}
/** set the url-pattern this mapping applies
* @param urlPattern url pattern this mapping applies
*/
public void setURLPattern(String urlPattern) {
this.urlPattern = urlPattern;
}
/** set the timeout
* @param timeout specific timeout of the cacheable entries
*/
public void setTimeout(int timeout) {
this.timeout = timeout;
}
/** set the timeout field
* @param field default timeout of the cacheable entries
*/
public void setTimeoutField(Field field) {
this.timeoutField = field;
}
/** set the refresh field
* @param field Boolean field for controlling when a refresh is needed
*/
public void setRefreshField(Field field) {
this.refreshField = field;
}
/** get the refresh field
* @return Configured refresh field
*/
public Field getRefreshField() {
return refreshField;
}
/** set allowable HTTP methods
* @param methods allowable methods
*/
public void setMethods(String[] methods) {
if (methods == null)
return;
this.methods = methods;
}
/** add an allowable HTTP method
* @param method allowable method
*/
public void addMethod(String method) {
if (method == null)
return;
String results[] = new String[methods.length + 1];
for (int i = 0; i < methods.length; i++)
results[i] = methods[i];
results[methods.length] = method;
methods = results;
}
/** add a key field
* @param field key Field to add
*/
public void addKeyField(Field field) {
if (field == null)
return;
Field results[] = new Field[keyFields.length + 1];
for (int i = 0; i < keyFields.length; i++)
results[i] = keyFields[i];
results[keyFields.length] = field;
keyFields = results;
}
/** add a constraint key field
* @param field ConstraintField to add
*/
public void addConstraintField(ConstraintField field) {
if (field == null)
return;
ConstraintField results[] =
new ConstraintField[constraintFields.length + 1];
for (int i = 0; i < constraintFields.length; i++)
results[i] = constraintFields[i];
results[constraintFields.length] = field;
constraintFields = results;
}
/*** cache-mapping getter methods ***/
/**
* get helper-name-ref associated with this mapping
* @return helper name associated
*/
public String getHelperNameRef() {
return helperNameRef;
}
/**
* get the underlying servlet-name
* @return servlet name
*/
public String getServletName() {
return servletName;
}
/**
* get the underlying url-pattern this mapping applicable
* @return url-pattern string configured
*/
public String getURLPattern() {
return urlPattern;
}
/**
* Return <code>true</code> if the specified HTTP request method is
* allowed for caching
*
* @param method Request method to check
*/
public boolean findMethod(String method) {
if (methods.length == 0)
return (true);
for (int i = 0; i < methods.length; i++) {
if (methods[i].equals(method))
return (true);
}
return (false);
}
/**
* get the timeout
* @return timeout value configured
*/
public int getTimeout() {
return timeout;
}
/**
* get the timeout field
* @return timeout field configured
*/
public Field getTimeoutField() {
return timeoutField;
}
/**
* get the key fields
* @return key fields configured
*/
public Field[] getKeyFields() {
return keyFields;
}
/**
* get the constraint fields
* @return constraint fields configured
*/
public ConstraintField[] getConstraintFields() {
return constraintFields;
}
}
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