com.aspectran.core.activity.request.PathVariableMap Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2022 The Aspectran Project
*
* Licensed 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 com.aspectran.core.activity.request;
import com.aspectran.core.activity.Translet;
import com.aspectran.core.context.expr.token.Token;
import com.aspectran.core.context.rule.type.TokenType;
import java.util.HashMap;
import java.util.Map;
/**
* The Class PathVariableMap.
*
* This class is generally not thread-safe.
* It is primarily designed for use in a single thread only.
*
* Created: 2016. 2. 13.
*/
public class PathVariableMap extends HashMap {
private static final long serialVersionUID = -3327966082696522044L;
public void applyTo(Translet translet) {
for (Map.Entry entry : entrySet()) {
Token token = entry.getKey();
if (token.getType() == TokenType.PARAMETER) {
translet.setParameter(token.getName(), entry.getValue());
} else if (token.getType() == TokenType.ATTRIBUTE) {
translet.setAttribute(token.getName(), entry.getValue());
}
}
}
public static PathVariableMap parse(Token[] nameTokens, String requestName) {
PathVariableMap pathVariables = new PathVariableMap();
/*
/example/customers/123-567/approval
/example/customers/
${id1}
-
${id2}
/approval
*/
int beginIndex = 0;
int endIndex;
Token prevToken = null;
Token lastToken = null;
for (Token token : nameTokens) {
TokenType type = token.getType();
if (type == TokenType.PARAMETER || type == TokenType.ATTRIBUTE) {
lastToken = token;
} else {
String term = token.stringify();
endIndex = requestName.indexOf(term, beginIndex);
if (endIndex == -1) {
return null;
}
if (endIndex > beginIndex) {
String value = requestName.substring(beginIndex, endIndex);
if (prevToken != null) {
if (!value.isEmpty()) {
pathVariables.put(prevToken, value);
}
} else if (!term.equals(value)) {
return null;
}
beginIndex += value.length();
} else if (prevToken != null && prevToken.getDefaultValue() != null) {
// If the last token ends with a "/" can be given a default value.
pathVariables.put(prevToken, prevToken.getDefaultValue());
}
beginIndex += term.length();
}
prevToken = (token.getType() != TokenType.TEXT ? token : null);
}
if (lastToken != null && prevToken == lastToken) {
String value = requestName.substring(beginIndex);
if (!value.isEmpty()) {
pathVariables.put(lastToken, value);
} else if (lastToken.getDefaultValue() != null) {
// If the last token ends with a "/" can be given a default value.
pathVariables.put(lastToken, lastToken.getDefaultValue());
}
}
return pathVariables;
}
}