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/*
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*
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package com.sun.appserv.web.cache.mapping;
import jakarta.servlet.ServletContext;
import jakarta.servlet.http.HttpServletRequest;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.web.LogFacade;
/** ConstraintField class represents a single Field and constraints on its
* values; Field name and its scope are inherited from the Field class.
*/
public class ConstraintField extends Field {
private static final String[] SCOPE_NAMES = {
"", "context.attribute", "request.header", "request.parameter",
"request.cookie", "request.attribute", "session.attribute",
"session.id"
};
private static final Logger _logger = LogFacade.getLogger();
// whether to cache if there was a match
boolean cacheOnMatch = true;
// whether to cache if there was a failure to match
boolean cacheOnMatchFailure = false;
// field value constraints
ValueConstraint constraints[] = new ValueConstraint[0];
/**
* create a new cache field, given a string representation of the scope
* @param name name of this field
* @param scope scope of this field
*/
public ConstraintField(String name, String scope)
throws IllegalArgumentException {
super(name, scope);
}
/** set whether to cache should the constraints check pass
* @param cacheOnMatch should the constraint check pass, should we cache?
*/
public void setCacheOnMatch(boolean cacheOnMatch) {
this.cacheOnMatch = cacheOnMatch;
}
/**
* @return cache-on-match setting
*/
public boolean getCacheOnMatch() {
return cacheOnMatch;
}
/** set whether to cache should there be a failure forcing the constraint
* @param cacheOnMatchFailure should there be a constraint check failure,
* enable cache?
*/
public void setCacheOnMatchFailure(boolean cacheOnMatchFailure) {
this.cacheOnMatchFailure = cacheOnMatchFailure;
}
/**
* @return cache-on-match-failure setting
*/
public boolean getCacheOnMatchFailure() {
return cacheOnMatchFailure;
}
/**
* add a constraint for this field
* @param constraint one constraint associated with this field
*/
public void addConstraint(ValueConstraint constraint) {
if (constraint == null)
return;
ValueConstraint results[] =
new ValueConstraint[constraints.length + 1];
for (int i = 0; i < constraints.length; i++)
results[i] = constraints[i];
results[constraints.length] = constraint;
constraints = results;
}
/**
* add an array of constraints for this field
* @param vcs constraints associated with this field
*/
public void setValueConstraints(ValueConstraint[] vcs) {
if (vcs == null)
return;
constraints = vcs;
}
/** apply the constraints on the value of the field in the given request.
* return a true if all the constraints pass; false when the
* field is not found or the field value doesn't pass the caching
* constraints.
*/
public boolean applyConstraints(ServletContext context,
HttpServletRequest request) {
Object value = getValue(context, request);
boolean isFine = _logger.isLoggable(Level.FINE);
if (value == null) {
// the field is not present in the request
if (isFine) {
_logger.log(Level.FINE, LogFacade.CONSTRAINT_FIELD_NOT_FOUND,
new Object[] {name, SCOPE_NAMES[scope], cacheOnMatchFailure});
}
return cacheOnMatchFailure;
} else if (constraints.length == 0) {
// the field is present but has no value constraints
if (isFine) {
_logger.log(Level.FINE, LogFacade.CONSTRAINT_FIELD_FOUND,
new Object[] {name, value.toString(), SCOPE_NAMES[scope], cacheOnMatch});
}
return cacheOnMatch;
}
// apply all the value constraints
for (int i = 0; i < constraints.length; i++) {
ValueConstraint c = constraints[i];
// one of the values matched
if (c.matches(value)) {
if (isFine) {
_logger.log(Level.FINE, LogFacade.CONSTRAINT_FIELD_MATCH,
new Object[] {name, value.toString(), SCOPE_NAMES[scope], cacheOnMatch});
}
return cacheOnMatch;
}
}
// none of the values matched; should we cache?
if (isFine) {
_logger.log(Level.FINE, LogFacade.CONSTRAINT_FIELD_NOT_MATCH,
new Object[] {name, value.toString(), SCOPE_NAMES[scope], cacheOnMatchFailure});
}
return cacheOnMatchFailure;
}
}