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 strCmd = "A = load 'bar';\nB = foreach A generate $0;";
        
        ParameterSubstitutionPreprocessor psp = new ParameterSubstitutionPreprocessor(50);
        BufferedReader pin = new BufferedReader(new StringReader(strCmd));  
        StringWriter writer = new StringWriter();
        psp.genSubstitutedFile(pin, writer, null, null);
        pin = new BufferedReader(new StringReader(writer.toString()));
             
        Grunt grunt = new Grunt(pin, context);
        int results[] = grunt.exec();
        for (int i=0; i<results.length; i++) {

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        // do parameter substitution
        try {
            ParameterSubstitutionPreprocessor psp = new ParameterSubstitutionPreprocessor(50);
            StringWriter writer = new StringWriter();
            psp.genSubstitutedFile(new BufferedReader(new InputStreamReader(in)),
                                   writer,
                                   paramList.size() > 0 ? paramList.toArray(new String[0]) : null,
                                   paramsFiles!=null ? paramsFiles.toArray(new String[0]) : null);


            return writer.toString();

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    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 ? paramFiles2.toArray(type2) : null);
        return new BufferedReader(new FileReader (scriptFile));


    } else {
        StringWriter writer = new StringWriter();

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                                paramFiles.size() > 0 ? paramFiles2.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 ? paramFiles2.toArray(type2) : null);
        return new BufferedReader(new StringReader(writer.toString()));
    }
}

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        // do parameter substitution
        try {
            ParameterSubstitutionPreprocessor psp = new ParameterSubstitutionPreprocessor(50);
            StringWriter writer = new StringWriter();
            psp.genSubstitutedFile(new BufferedReader(new InputStreamReader(in)),
                                   writer,
                                   paramList.size() > 0 ? paramList.toArray(new String[0]) : null,
                                   paramsFiles!=null ? paramsFiles.toArray(new String[0]) : null);


            return writer.toString();

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


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


    } else {
        StringWriter writer = new StringWriter();

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


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

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        StringWriter writer = new StringWriter();
        BufferedReader in = new BufferedReader(new StringReader(qstr));
        String[] type1 = new String[1];
        try {
            psp.genSubstitutedFile(in, writer, plist.toArray(params), 
                    scriptContext.getPigContext().getParamFiles()!=null && 
                    scriptContext.getPigContext().getParamFiles().size() > 0 ? 
                    scriptContext.getPigContext().getParamFiles().toArray(type1) : null);
        } catch (org.apache.pig.tools.parameters.ParseException e) {
            throw new IOException("Param substitution failed", e);

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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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      ParameterSubstitutionPreprocessor psp = new ParameterSubstitutionPreprocessor(50);
        BufferedReader pigIStream = new BufferedReader(new FileReader(queryFile.toString()));
        StringWriter pigOStream = new StringWriter();


        psp.genSubstitutedFile(pigIStream , pigOStream , arg, null);


        assertTrue(pigOStream.toString().contains("中文"));


        queryFile.delete();
    }

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