hadoop QueryParams 源码
haddop QueryParams 代码
文件路径：/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/oauth2/QueryParams.java
/**
* 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
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* 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.hadoop.fs.azurebfs.oauth2;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
/**
* Utilities class http query parameters.
*/
public class QueryParams {
private Map<String, String> params = new HashMap<>();
private String apiVersion = null;
private String separator = "";
private String serializedString = null;
public void add(String name, String value) {
params.put(name, value);
serializedString = null;
}
public void setApiVersion(String apiVersion) {
this.apiVersion = apiVersion;
serializedString = null;
}
public String serialize() {
if (serializedString == null) {
StringBuilder sb = new StringBuilder();
for (Map.Entry<String, String> entry : params.entrySet()) {
String name = entry.getKey();
try {
sb.append(separator);
sb.append(URLEncoder.encode(name, "UTF-8"));
sb.append('=');
sb.append(URLEncoder.encode(entry.getValue(), "UTF-8"));
separator = "&";
} catch (UnsupportedEncodingException ex) {
}
}
if (apiVersion != null) {
sb.append(separator);
sb.append("api-version=");
sb.append(apiVersion);
separator = "&";
}
serializedString = sb.toString();
}
return serializedString;
}
}
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