diff options
Diffstat (limited to 'bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/jsonpath')
-rw-r--r-- | bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java b/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java new file mode 100644 index 0000000000..56ce2dfa19 --- /dev/null +++ b/bpmn/MSOCommonBPMN/src/main/java/org/openecomp/mso/jsonpath/JsonPathUtil.java @@ -0,0 +1,39 @@ +package org.openecomp.mso.jsonpath; + +import java.util.Optional; + +import com.jayway.jsonpath.Configuration; +import com.jayway.jsonpath.JsonPath; +import com.jayway.jsonpath.Option; + +import net.minidev.json.JSONArray; + +public class JsonPathUtil { + + + private final Configuration conf; + + private JsonPathUtil() { + conf = Configuration.defaultConfiguration().addOptions(Option.ALWAYS_RETURN_LIST, Option.SUPPRESS_EXCEPTIONS); + } + + private static class Helper { + private static final JsonPathUtil INSTANCE = new JsonPathUtil(); + } + + public static JsonPathUtil getInstance() { + return Helper.INSTANCE; + } + public boolean pathExists(String json, String jsonPath) { + return !JsonPath.using(conf).parse(json).<JSONArray>read(jsonPath).isEmpty(); + } + + public <T> Optional<T> locateResult(String json, String jsonPath) { + final JSONArray result = JsonPath.using(conf).parse(json).read(jsonPath); + if (result.isEmpty()) { + return Optional.empty(); + } else { + return Optional.of((T)result.get(0)); + } + } +} |