Package org.apache.pig

Examples of org.apache.pig.ResourceSchema

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  }

  private static ResourceSchema getTupleSubSchema(HCatFieldSchema hfs) throws IOException {
    // for each struct subfield, create equivalent ResourceFieldSchema
    ResourceSchema s = new ResourceSchema();
    List<ResourceFieldSchema> lrfs = new ArrayList<ResourceFieldSchema>();
    for (HCatFieldSchema subField : hfs.getStructSubSchema().getFields()) {
      lrfs.add(getResourceSchemaFromFieldSchema(subField));
    }
    s.setFields(lrfs.toArray(new ResourceFieldSchema[0]));
    return s;
  }
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    for (HCatFieldSchema hfs : hcatSchema.getFields()) {
      ResourceFieldSchema rfSchema;
      rfSchema = getResourceSchemaFromFieldSchema(hfs);
      rfSchemaList.add(rfSchema);
    }
    ResourceSchema rSchema = new ResourceSchema();
    rSchema.setFields(rfSchemaList.toArray(new ResourceFieldSchema[0]));
    return rSchema;

  }
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      .setType(DataType.TUPLE);
    HCatFieldSchema arrayElementFieldSchema = hfs.getArrayElementSchema().get(0);
    if (arrayElementFieldSchema.getType() == Type.STRUCT) {
      bagSubFieldSchemas[0].setSchema(getTupleSubSchema(arrayElementFieldSchema));
    } else if (arrayElementFieldSchema.getType() == Type.ARRAY) {
      ResourceSchema s = new ResourceSchema();
      List<ResourceFieldSchema> lrfs = Arrays.asList(getResourceSchemaFromFieldSchema(arrayElementFieldSchema));
      s.setFields(lrfs.toArray(new ResourceFieldSchema[0]));
      bagSubFieldSchemas[0].setSchema(s);
    } else {
      ResourceFieldSchema[] innerTupleFieldSchemas = new ResourceFieldSchema[1];
      innerTupleFieldSchemas[0] = new ResourceFieldSchema().setName(innerFieldName)
        .setDescription("The inner field in the tuple in the bag")
        .setType(getPigType(arrayElementFieldSchema))
        .setSchema(null); // the element type is not a tuple - so no subschema
      bagSubFieldSchemas[0].setSchema(new ResourceSchema().setFields(innerTupleFieldSchemas));
    }
    ResourceSchema s = new ResourceSchema().setFields(bagSubFieldSchemas);
    return s;

  }
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  }

  private static ResourceSchema getTupleSubSchema(HCatFieldSchema hfs) throws IOException {
    // for each struct subfield, create equivalent ResourceFieldSchema
    ResourceSchema s = new ResourceSchema();
    List<ResourceFieldSchema> lrfs = new ArrayList<ResourceFieldSchema>();
    for (HCatFieldSchema subField : hfs.getStructSubSchema().getFields()) {
      lrfs.add(getResourceSchemaFromFieldSchema(subField));
    }
    s.setFields(lrfs.toArray(new ResourceFieldSchema[0]));
    return s;
  }
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        "specification for: "+outLoc;
        int errCode = 2116;

        try {
            if(store.getSchema() != null){
                sf.checkSchema(new ResourceSchema(store.getSchema(), store.getSortInfo()));               
            }
        } catch (FrontendException e) {
            msgCollector.collect(errMsg, MessageType.Error) ;
            throw new PlanValidationException(errMsg, errCode, pigCtx.getErrorSource(), e);
        } catch (IOException e) {
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    private Schema determineSchema() throws IOException {
        if(!mDeterminedSchemaCached) {
            if(LoadMetadata.class.isAssignableFrom(mLoadFunc.getClass())) {
                LoadMetadata loadMetadata = (LoadMetadata)mLoadFunc;
                ResourceSchema rSchema = loadMetadata.getSchema(
                        mInputFileSpec.getFileName(), new Job(conf));
                mDeterminedSchema = Schema.getPigSchema(rSchema);
            }
            // set the flag so that future calls just use mDeterminedSchema
            mDeterminedSchemaCached = true;
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    {
        setLocation(location, job);
        CfInfo cfInfo = getCfInfo(loadSignature);
        CfDef cfDef = cfInfo.cfDef;
        // top-level schema, no type
        ResourceSchema schema = new ResourceSchema();

        // get default marshallers and validators
        Map<MarshallerType, AbstractType> marshallers = getDefaultMarshallers(cfDef);
        Map<ByteBuffer, AbstractType> validators = getValidatorMap(cfDef);

        // will contain all fields for this schema
        List<ResourceFieldSchema> allSchemaFields = new ArrayList<ResourceFieldSchema>();

        for (ColumnDef cdef : cfDef.column_metadata)
        {
            ResourceFieldSchema valSchema = new ResourceFieldSchema();
            AbstractType validator = validators.get(cdef.name);
            if (validator == null)
                validator = marshallers.get(MarshallerType.DEFAULT_VALIDATOR);
            valSchema.setName(new String(cdef.getName()));
            valSchema.setType(getPigType(validator));
            allSchemaFields.add(valSchema);
        }

        // top level schema contains everything
        schema.setFields(allSchemaFields.toArray(new ResourceFieldSchema[allSchemaFields.size()]));
        return schema;
    }
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                int errCode = 2104;
                String msg = "Error while determining schema of BinStorage data.";
                throw new ExecException(msg, errCode, PigException.BUG, e);
            }
        }
        return new ResourceSchema(s);
    }
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        ResourceFieldSchema stringfs = new ResourceFieldSchema();
        stringfs.setType(DataType.CHARARRAY);
        ResourceFieldSchema intfs = new ResourceFieldSchema();
        intfs.setType(DataType.INTEGER);
       
        ResourceSchema tupleSchema = new ResourceSchema();
        tupleSchema.setFields(new ResourceFieldSchema[]{stringfs, intfs});
        ResourceFieldSchema tuplefs = new ResourceFieldSchema();
        tuplefs.setSchema(tupleSchema);
        tuplefs.setType(DataType.TUPLE);
       
        return tuplefs;
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    }
   
    public static ResourceFieldSchema getSmallTupDataBagFieldSchema() throws IOException {
        ResourceFieldSchema tuplefs = getSmallTupleFieldSchema();
       
        ResourceSchema bagSchema = new ResourceSchema();
        bagSchema.setFields(new ResourceFieldSchema[]{tuplefs});
        ResourceFieldSchema bagfs = new ResourceFieldSchema();
        bagfs.setSchema(bagSchema);
        bagfs.setType(DataType.BAG);
       
        return bagfs;
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