/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.catalina.ssi;
import java.io.IOException;
import java.util.Collection;
import java.util.Date;
/**
* Interface used by SSIMediator to talk to the 'outside world' ( usually a servlet ).
*/
public interface SSIExternalResolver {
/**
* Adds any external variables to the variableNames collection.
*
* @param variableNames the collection to add to
*/
void addVariableNames(Collection<String> variableNames);
String getVariableValue(String name);
/**
* Set the named variable to the specified value. If value is null, then the variable will be removed ( ie. a call
* to getVariableValue will return null )
*
* @param name of the variable
* @param value of the variable
*/
void setVariableValue(String name, String value);
/**
* Returns the current date. This is useful for putting the SSI stuff in a regression test. Since you can make the
* current date a constant, it makes testing easier since the output won't change.
*
* @return the data
*/
Date getCurrentDate();
long getFileSize(String path, boolean virtual) throws IOException;
long getFileLastModified(String path, boolean virtual) throws IOException;
String getFileText(String path, boolean virtual) throws IOException;
void log(String message, Throwable throwable);
}