Examples of org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor.genSubstitutedFile()

Class org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor

Examples of org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor.genSubstitutedFile()

org.apache.pig.tools.parameters.ParameterSubstitutionPreprocessor.genSubstitutedFile()
This is the main API that takes script template and produces pig script @param pigInput - input stream that contains pig file @param pigOutput - stream where transformed file is written @param args - command line arguments in the order they appear on the command line; format: key=val @param argFiles - list of configuration files in the order they appear on the command line

    String[] type1 = new String[1];
    String[] type2 = new String[1];


    if (createFile){
        BufferedWriter fw = new BufferedWriter(new FileWriter(scriptFile));
        psp.genSubstitutedFile (origPigScript, fw, params.size() > 0 ? params.toArray(type1) : null, 
                                paramFiles.size() > 0 ? paramFiles.toArray(type2) : null);
        return new BufferedReader(new FileReader (scriptFile));


    } else {
        StringWriter writer = new StringWriter();

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                                paramFiles.size() > 0 ? paramFiles.toArray(type2) : null);
        return new BufferedReader(new FileReader (scriptFile));


    } else {
        StringWriter writer = new StringWriter();
        psp.genSubstitutedFile (origPigScript, writer,  params.size() > 0 ? params.toArray(type1) : null, 
                                paramFiles.size() > 0 ? paramFiles.toArray(type2) : null);
        return new BufferedReader(new StringReader(writer.toString()));
    }
}

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        ParameterSubstitutionPreprocessor psp = new ParameterSubstitutionPreprocessor(50);
        StringWriter writer = new StringWriter();


        try{
            psp.genSubstitutedFile(new BufferedReader(new FileReader(script)), 
                                   writer,  
                                   params.size() > 0 ? params.toArray(new String[0]) : null, 
                                   files.size() > 0 ? files.toArray(new String[0]) : null);
        } catch (org.apache.pig.tools.parameters.ParseException pex) {
            throw new ParseException(pex.getMessage());

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        pigIStream = new BufferedReader(new FileReader(basedir + "/input1.pig"));
        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = {"date=20080228"};
        String[] argFiles = null;
        ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);


        FileInputStream pigResultStream = new FileInputStream(basedir + "/output1.pig");
        pigExResultStream = new FileInputStream(basedir + "/ExpectedResult.pig");
        BufferedReader inExpected = new BufferedReader(new InputStreamReader(pigExResultStream));
        BufferedReader inResult = new BufferedReader(new InputStreamReader(pigResultStream));

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        pigIStream = new BufferedReader(new FileReader(basedir + "/input1.pig"));
        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null;
        String[] argFiles = {basedir+"/ConfFile1.txt"};
        ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);


        FileInputStream pigResultStream = new FileInputStream(basedir + "/output1.pig");
        pigExResultStream = new FileInputStream(basedir + "/ExpectedResult.pig");
        BufferedReader inExpected = new BufferedReader(new InputStreamReader(pigExResultStream));
        BufferedReader inResult = new BufferedReader(new InputStreamReader(pigResultStream));

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                "test/org/apache/pig/test/data/generate_date.bat", Shell.WINDOWS);
        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null; //{"date=`sh generate_date.sh`"};     //`date \\T`"};
        String[] argFiles = null; // {basedir+"/ConfFile1.txt"};
        ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);


        FileInputStream pigResultStream = new FileInputStream(basedir + "/output1.pig");
        pigExResultStream = new FileInputStream(basedir + "/ExpectedResultDefault.pig");
        BufferedReader inExpected = new BufferedReader(new InputStreamReader(pigExResultStream));
        BufferedReader inResult = new BufferedReader(new InputStreamReader(pigResultStream));

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        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null;
        String[] argFiles = null;
        try {
            ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);
        } catch (RuntimeException e) {
            if (e.getMessage().equals("Undefined parameter : 4")) {
                fail("Pig supported parameter $4 should not have been resolved.");
            }
        }

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        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null;
        String[] argFiles = null;
        try {
            ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);
            fail ("Should have thrown an Undefined parameter exception");
        } catch (ParseException e) {
            assertEquals(e.getMessage(), "Undefined parameter : param");
        }
        log.info("Done");

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        pigIStream = new BufferedReader(new FileReader(basedir + "/inputSubstitutionWithinValue.pig"));
        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null;
        String[] argFiles = {basedir+"/ConfFile1.txt"};
        ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);


        FileInputStream pigResultStream = new FileInputStream(basedir + "/output1.pig");
        pigExResultStream = new FileInputStream(basedir + "/ExpectedResult4.pig");
        BufferedReader inExpected = new BufferedReader(new InputStreamReader(pigExResultStream));
        BufferedReader inResult = new BufferedReader(new InputStreamReader(pigResultStream));

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                "test/org/apache/pig/test/data/generate_date.bat", Shell.WINDOWS);
        pigOStream = new FileWriter(basedir + "/output1.pig");


        String[] arg = null;
        String[] argFiles = null;
        ps.genSubstitutedFile(pigIStream , pigOStream , arg , argFiles);


        FileInputStream pigResultStream = new FileInputStream(basedir + "/output1.pig");
        pigExResultStream = new FileInputStream(basedir + "/ExpectedResult4.pig");
        BufferedReader inExpected = new BufferedReader(new InputStreamReader(pigExResultStream));
        BufferedReader inResult = new BufferedReader(new InputStreamReader(pigResultStream));

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