Java tutorial
/******************************************************************************* * (c) Copyright 2014 Hewlett-Packard Development Company, L.P. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Apache License v2.0 which accompany this distribution. * * The Apache License is available at * http://www.apache.org/licenses/LICENSE-2.0 * *******************************************************************************/ package io.cloudslang.content.json.actions; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.node.ArrayNode; import com.hp.oo.sdk.content.annotations.Action; import com.hp.oo.sdk.content.annotations.Output; import com.hp.oo.sdk.content.annotations.Param; import com.hp.oo.sdk.content.annotations.Response; import com.hp.oo.sdk.content.plugin.ActionMetadata.MatchType; import com.hp.oo.sdk.content.plugin.ActionMetadata.ResponseType; import io.cloudslang.content.constants.OutputNames; import io.cloudslang.content.constants.ResponseNames; import io.cloudslang.content.constants.ReturnCodes; import io.cloudslang.content.json.utils.Constants; import io.cloudslang.content.utils.StringUtilities; import java.io.IOException; import java.util.HashMap; import java.util.Map; import static io.cloudslang.content.json.utils.JsonUtils.populateResult; import static io.cloudslang.content.constants.OtherValues.EMPTY_STRING; /** * Created by ioanvranauhp * Date 1/12/2015. */ public class MergeArrays { public static final String NOT_A_VALID_JSON_ARRAY_MESSAGE = "The input value is not a valid JavaScript array"; public static final String INVALID_JSON_OBJECT_PROVIDED_EXCEPTION_MESSAGE = "Invalid jsonObject provided! "; public static final String ARRAY1_MESSAGE = " array1="; public static final String ARRAY2_MESSAGE = " array2="; /** * This operation merge the contents of two JSON arrays. This operation does not modify either of the input arrays. * The result is the contents or array1 and array2, merged into a single array. The merge operation add into the result * the first array and then the second array. * * @param array1 The string representation of a JSON array object. * Arrays in JSON are comma separated lists of objects, enclosed in square brackets [ ]. * Examples: [1,2,3] or ["one","two","three"] or [{"one":1, "two":2}, 3, "four"] * @param array2 The string representation of a JSON array object. * Arrays in JSON are comma separated lists of objects, enclosed in square brackets [ ]. * Examples: [1,2,3] or ["one","two","three"] or [{"one":1, "two":2}, 3, "four"] * @return a map containing the output of the operation. Keys present in the map are: * <p/> * <br><br><b>returnResult</b> - This will contain the string representation of the new JSON array with the contents * of array1 and array2. * <br><b>exception</b> - In case of success response, this result is empty. In case of failure response, * this result contains the java stack trace of the runtime exception. * <br><br><b>returnCode</b> - The returnCode of the operation: 0 for success, -1 for failure. */ @Action(name = "Merge Arrays", outputs = { @Output(OutputNames.RETURN_RESULT), @Output(OutputNames.RETURN_CODE), @Output(OutputNames.EXCEPTION) }, responses = { @Response(text = ResponseNames.SUCCESS, field = OutputNames.RETURN_CODE, value = ReturnCodes.SUCCESS, matchType = MatchType.COMPARE_EQUAL, responseType = ResponseType.RESOLVED), @Response(text = ResponseNames.FAILURE, field = OutputNames.RETURN_CODE, value = ReturnCodes.FAILURE, matchType = MatchType.COMPARE_EQUAL, responseType = ResponseType.ERROR, isOnFail = true) }) public Map<String, String> execute(@Param(value = Constants.InputNames.ARRAY, required = true) String array1, @Param(value = Constants.InputNames.ARRAY, required = true) String array2) { Map<String, String> returnResult = new HashMap<>(); if (StringUtilities.isBlank(array1)) { final String exceptionValue = NOT_A_VALID_JSON_ARRAY_MESSAGE + ARRAY1_MESSAGE.replaceFirst("=", EMPTY_STRING); return populateResult(returnResult, exceptionValue, new Exception(exceptionValue)); } if (StringUtilities.isBlank(array2)) { final String exceptionValue = NOT_A_VALID_JSON_ARRAY_MESSAGE + ARRAY2_MESSAGE.replaceFirst("=", EMPTY_STRING); return populateResult(returnResult, new Exception(exceptionValue)); } JsonNode jsonNode1; JsonNode jsonNode2; ObjectMapper mapper = new ObjectMapper(); try { jsonNode1 = mapper.readTree(array1); } catch (IOException exception) { final String value = INVALID_JSON_OBJECT_PROVIDED_EXCEPTION_MESSAGE + ARRAY1_MESSAGE + array1; return populateResult(returnResult, value, exception); } try { jsonNode2 = mapper.readTree(array2); } catch (IOException exception) { final String value = INVALID_JSON_OBJECT_PROVIDED_EXCEPTION_MESSAGE + ARRAY2_MESSAGE + array2; return populateResult(returnResult, value, exception); } final String result; if (jsonNode1 instanceof ArrayNode && jsonNode2 instanceof ArrayNode) { final ArrayNode asJsonArray1 = (ArrayNode) jsonNode1; final ArrayNode asJsonArray2 = (ArrayNode) jsonNode2; final ArrayNode asJsonArrayResult = new ArrayNode(mapper.getNodeFactory()); asJsonArrayResult.addAll(asJsonArray1); asJsonArrayResult.addAll(asJsonArray2); result = asJsonArrayResult.toString(); } else { result = NOT_A_VALID_JSON_ARRAY_MESSAGE + ARRAY1_MESSAGE + array1 + ARRAY2_MESSAGE + array2; return populateResult(returnResult, new Exception(result)); } return populateResult(returnResult, result, null); } }