I meet a error when i write a plugin for add new presto plugin

[mycla...@gmail.com]

I meet a error when i write a plugin for add new presto plugin

@ScalarFunction("json_array_extract")
@Description("extract json array value by given jsonPath.")
@SqlType("array(varchar)")
public static Block jsonArrayExtract(@SqlType(StandardTypes.VARCHAR) Slice json, @SqlType(JsonPathType.NAME) JsonPath jsonPath) {
Long length = JsonFunctions.jsonArrayLength(j

code at github : https://github.com/hawkingrei/presto-third-functions/blob/master/src/main/java/cc/shanruifeng/functions/udfs/scalar/json/JsonArrayExtractFunction.java

ERROR main com.facebook.presto.server.PrestoServer com/facebook/presto/operator/scalar/JsonPath
java.lang.NoClassDefFoundError: com/facebook/presto/operator/scalar/JsonPath
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.getDeclaredMethods(Class.java:1975)
at com.facebook.presto.operator.scalar.annotations.ScalarFromAnnotationsParser.findPublicMethodsWithAnnotation(ScalarFromAnnotationsParser.java:163)
at com.facebook.presto.operator.scalar.annotations.ScalarFromAnnotationsParser.findScalarsInFunctionSetClass(ScalarFromAnnotationsParser.java:88)
at com.facebook.presto.operator.scalar.annotations.ScalarFromAnnotationsParser.parseFunctionDefinitions(ScalarFromAnnotationsParser.java:60)
at com.facebook.presto.metadata.FunctionExtractor.extractFunctions(FunctionExtractor.java:57)
at com.facebook.presto.server.PluginManager.installPlugin(PluginManager.java:203)
at com.facebook.presto.server.PluginManager.loadPlugin(PluginManager.java:175)
at com.facebook.presto.server.PluginManager.loadPlugin(PluginManager.java:158)
at com.facebook.presto.server.PluginManager.loadPlugins(PluginManager.java:139)
at com.facebook.presto.server.PrestoServer.run(PrestoServer.java:118)
at com.facebook.presto.server.PrestoServer.main(PrestoServer.java:67)
Caused by: java.lang.ClassNotFoundException: com.facebook.presto.operator.scalar.JsonPath
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at com.facebook.presto.server.PluginClassLoader.loadClass(PluginClassLoader.java:76)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 13 more

can you help me ? thank you very much

[David Phillips]

Sorry for the late reply. I'll respond on the issue you filed: https://github.com/prestodb/presto/issues/6693

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[tx08...@gmail.com]

I encountered the same problem，did you solve the problem?