forked from community/device-mgt-plugins
Merge pull request #852 from charithag/master
Add siddhi extension to Get json array form given list of argumentsrevert-dabc3590
Kamidu Sachith Punchihewa
7 years ago
committed by
GitHub
commit
97966336eb
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/*
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* Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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*
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* WSO2 Inc. licenses this file to you under the Apache License,
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* Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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package org.wso2.extension.siddhi.execution.json;
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import org.json.JSONArray;
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import org.wso2.siddhi.core.config.ExecutionPlanContext;
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import org.wso2.siddhi.core.executor.ExpressionExecutor;
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import org.wso2.siddhi.core.executor.function.FunctionExecutor;
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import org.wso2.siddhi.query.api.definition.Attribute;
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import org.wso2.siddhi.query.api.exception.ExecutionPlanValidationException;
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/**
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* getArray(elements..)
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* Returns json array of elements as a string
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* Accept Type(s): (STRING|INT|DOUBLE|FLOAT|OBJECT ..)
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* Return Type(s): (STRING)
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*/
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public class GetArrayFunctionExtension extends FunctionExecutor {
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private Attribute.Type returnType = Attribute.Type.STRING;
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@Override
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protected void init(ExpressionExecutor[] attributeExpressionExecutors,
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ExecutionPlanContext executionPlanContext) {
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if (attributeExpressionExecutors.length <= 0) {
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throw new ExecutionPlanValidationException(
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"Invalid no of arguments passed to json:getArray() function," + " required one or more, but found "
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+ attributeExpressionExecutors.length);
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}
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Attribute.Type inputType = attributeExpressionExecutors[0].getReturnType();
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for (int i = 1; i < attributeExpressionExecutors.length; i++) {
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if (attributeExpressionExecutors[0].getReturnType() != inputType) {
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throw new ExecutionPlanValidationException(
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"Parameter types are inconsistent. All parameters should be same");
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}
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}
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}
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@Override
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protected Object execute(Object[] data) {
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JSONArray jsonArray = new JSONArray();
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for (Object obj : data) {
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jsonArray.put(obj);
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}
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return jsonArray.toString();
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}
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@Override
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protected Object execute(Object data) {
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return execute(new Object[]{data});
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}
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@Override
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public void start() {
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//Nothing to start
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}
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@Override
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public void stop() {
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//Nothing to stop
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}
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@Override
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public Attribute.Type getReturnType() {
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return returnType;
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}
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@Override
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public Object[] currentState() {
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return null; //No need to maintain a state.
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}
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@Override
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public void restoreState(Object[] state) {
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//Since there's no need to maintain a state, nothing needs to be done here.
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}
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}
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51
components/extensions/siddhi-extensions/org.wso2.extension.siddhi.execution.json/src/test/java/org/wso2/extension/siddhi/execution/json/getPropertyFunctionTestCase.java → components/extensions/siddhi-extensions/org.wso2.extension.siddhi.execution.json/src/test/java/org/wso2/extension/siddhi/execution/json/ExtensionTestCase.java
51
components/extensions/siddhi-extensions/org.wso2.extension.siddhi.execution.json/src/test/java/org/wso2/extension/siddhi/execution/json/getPropertyFunctionTestCase.java → components/extensions/siddhi-extensions/org.wso2.extension.siddhi.execution.json/src/test/java/org/wso2/extension/siddhi/execution/json/ExtensionTestCase.java
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<!--
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~ Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
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~
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~ WSO2 Inc. licenses this file to you under the Apache License,
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~ Version 2.0 (the "License"); you may not use this file except
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~ in compliance with the License.
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~ you may obtain a copy of the License at
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~
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~ http://www.apache.org/licenses/LICENSE-2.0
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~
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~ Unless required by applicable law or agreed to in writing,
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~ software distributed under the License is distributed on an
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~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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~ KIND, either express or implied. See the License for the
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~ specific language governing permissions and limitations
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~ under the License.
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-->
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<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >
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<suite name="JsonExtensionTestSuite">
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<parameter name="useDefaultListeners" value="false"/>
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<test name="Extension Unit Tests" preserve-order="true">
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<classes>
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<class name="org.wso2.extension.siddhi.execution.json.ExtensionTestCase"/>
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</classes>
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</test>
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</suite>
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