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https://issues.apache.org/jira/browse/SYSTEMML-654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Dusenberry updated SYSTEMML-654:
-------------------------------------
Assignee: Glenn Weidner
> DML Functions Should Override Builtin Functions
> -----------------------------------------------
>
> Key: SYSTEMML-654
> URL: https://issues.apache.org/jira/browse/SYSTEMML-654
> Project: SystemML
> Issue Type: Sub-task
> Affects Versions: SystemML 0.10
> Reporter: Mike Dusenberry
> Assignee: Glenn Weidner
>
> Currently, if a user defines a DML-bodied function that has the same name as
> a builtin function, an error will be returned. This occurs both if the
> function is defined in the same file as it is being called (which could look
> like a builtin function call, although the user does not wish it to be), or
> if the function is defined in a separate file and called with a namespace
> notation. As we grow the language with an increasing number of builtin
> functions, this is not the desired behavior. Instead, any DML functions
> should override any builtin functions.
> Example 1:
> {code}
> min = function(int i) {
> print("hi" + i)
> }
> tmp = min(1) # fail!
> {code}
> {code}
> : org.apache.sysml.parser.LanguageException: Unsupported Parameters : ERROR:
> null -- line 6, column 0 -- Expecting matrix parameter for function MIN
> at
> org.apache.sysml.parser.Expression.raiseValidateError(Expression.java:421)
> at
> org.apache.sysml.parser.BuiltinFunctionExpression.checkMatrixParam(BuiltinFunctionExpression.java:1221)
> at
> org.apache.sysml.parser.BuiltinFunctionExpression.validateExpression(BuiltinFunctionExpression.java:314)
> at
> org.apache.sysml.parser.StatementBlock.validate(StatementBlock.java:598)
> at
> org.apache.sysml.parser.DMLTranslator.validateParseTree(DMLTranslator.java:136)
> at
> org.apache.sysml.api.MLContext.executeUsingSimplifiedCompilationChain(MLContext.java:1325)
> at
> org.apache.sysml.api.MLContext.compileAndExecuteScript(MLContext.java:1227)
> at org.apache.sysml.api.MLContext.executeScript(MLContext.java:1165)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)
> at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381)
> at py4j.Gateway.invoke(Gateway.java:259)
> at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
> at py4j.commands.CallCommand.execute(CallCommand.java:79)
> at py4j.GatewayConnection.run(GatewayConnection.java:209)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> Example 2:
> {code}
> # util.dml
> min = function(int i) {
> print("hi" + i)
> }
> {code}
> {code}
> source("util.dml") as util
> tmp = util::min(1) # fail!
> {code}
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