Package org.apache.pig.impl.util

Examples of org.apache.pig.impl.util.UDFContext

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           pair.set(position, value);
    }

    private CfDef getCfDef(String signature)
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        return cfdefFromString(property.getProperty(signature));
    }
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        return cfdefFromString(property.getProperty(signature));
    }

    private List<IndexExpression> getIndexExpressions()
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        if (property.getProperty(PARTITION_FILTER_SIGNATURE) != null)
            return indexExpressionsFromString(property.getProperty(PARTITION_FILTER_SIGNATURE));
        else
            return null;
    }
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        return partitionKeys;
    }

    public void setPartitionFilter(Expression partitionFilter)
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        property.setProperty(PARTITION_FILTER_SIGNATURE, indexExpressionsToString(filterToIndexExpressions(partitionFilter)));
    }
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           pair.set(position, value);
    }

    private CfDef getCfDef(String signature)
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        return cfdefFromString(property.getProperty(signature));
    }
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    /* Methods to get the column family schema from Cassandra */

    private void initSchema(String signature)
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);

        // Only get the schema if we haven't already gotten it
        if (!property.containsKey(signature))
        {
            Cassandra.Client client = null;
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    // InputFormat.createRecordReader() time - we are not sure when
    // OwlInputFormat needs to know about pruned projections - so doing it
    // here will ensure we communicate to OwlInputFormat about pruned
    // projections at getSplits() and createRecordReader() time

    UDFContext udfContext = UDFContext.getUDFContext();
    Properties props = udfContext.getUDFProperties(this.getClass(),
        new String[]{signature});
    RequiredFieldList requiredFieldsInfo =
      (RequiredFieldList)props.get(PRUNE_PROJECTION_INFO);
    if(requiredFieldsInfo != null) {
      // convert to owlschema and pass to OwlInputFormat
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  }


  // helper methods
  private void storeInUDFContext(String signature, String key, Object value) {
    UDFContext udfContext = UDFContext.getUDFContext();
    Properties props = udfContext.getUDFProperties(
        this.getClass(), new String[] {signature});
    props.put(key, value);
  }
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        }
        return reducerMap;
    }
   
    public static void setupUDFContext(Configuration job) throws IOException {
        UDFContext udfc = UDFContext.getUDFContext();
        udfc.addJobConf(job);
        udfc.deserialize();
    }
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           pair.set(position, value);
    }

    private CfDef getCfDef(String signature)
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        return cfdefFromString(property.getProperty(signature));
    }
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        return cfdefFromString(property.getProperty(signature));
    }

    private List<IndexExpression> getIndexExpressions()
    {
        UDFContext context = UDFContext.getUDFContext();
        Properties property = context.getUDFProperties(CassandraStorage.class);
        if (property.getProperty(PARTITION_FILTER_SIGNATURE) != null)
            return indexExpressionsFromString(property.getProperty(PARTITION_FILTER_SIGNATURE));
        else
            return null;
    }
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