Package org.apache.hadoop.hive.metastore.api

Examples of org.apache.hadoop.hive.metastore.api.FieldSchema

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  private Type getType(MType mtype) {
    List<FieldSchema> fields = new ArrayList<FieldSchema>();
    if(mtype.getFields() != null) {
      for (MFieldSchema field : mtype.getFields()) {
        fields.add(new FieldSchema(field.getName(), field.getType(), field.getComment()));
      }
    }
    return new Type(mtype.getName(), mtype.getType1(), mtype.getType2(), fields);
  }
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  private List<FieldSchema> convertToFieldSchemas(List<MFieldSchema> mkeys) {
    List<FieldSchema> keys = null;
    if(mkeys != null) {
      keys = new ArrayList<FieldSchema>(mkeys.size());
      for (MFieldSchema part : mkeys) {
        keys.add(new FieldSchema(part.getName(), part.getType(), part.getComment()));
      }
    }
    return keys;
  }
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      }
      DataOutput outStream = (DataOutput)fs.create(descTbl.getResFile());
      Iterator<FieldSchema> iterCols = cols.iterator();
      while (iterCols.hasNext()) {
        // create a row per column
        FieldSchema col = iterCols.next();
        outStream.writeBytes(col.getName());
        outStream.write(separator);
        outStream.writeBytes(col.getType());
        outStream.write(separator);
        outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
        outStream.write(terminator);
      }

      if (tableName.equals(colPath)) {
        // also return the partitioning columns
        List<FieldSchema> partCols = tbl.getPartCols();
        Iterator<FieldSchema> iterPartCols = partCols.iterator();
        while (iterPartCols.hasNext()) {
          FieldSchema col = iterPartCols.next();
          outStream.writeBytes(col.getName());
          outStream.write(separator);
          outStream.writeBytes(col.getType());
          outStream.write(separator);
          outStream.writeBytes(col.getComment() == null ? "" : col.getComment());
          outStream.write(terminator);
        }

        // if extended desc table then show the complete details of the table
        if (descTbl.isExt()) {
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        tbl.getTTable().getSd().setCols(newCols);
      } else {
        // make sure the columns does not already exist
        Iterator<FieldSchema> iterNewCols = newCols.iterator();
        while (iterNewCols.hasNext()) {
          FieldSchema newCol = iterNewCols.next();
          String newColName = newCol.getName();
          Iterator<FieldSchema> iterOldCols = oldCols.iterator();
          while (iterOldCols.hasNext()) {
            String oldColName = iterOldCols.next().getName();
            if (oldColName.equalsIgnoreCase(newColName)) {
              console.printError("Column '" + newColName + "' exists");
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          }
        }

        // rules on how to recurse the SerDe based on its type
        if (oi.getCategory() != Category.STRUCT) {
          str_fields.add(new FieldSchema(last_name, oi.getTypeName(), "automatically generated"));
        } else {
          List<? extends StructField> fields = ((StructObjectInspector)oi).getAllStructFieldRefs();
          for(int i=0; i<fields.size(); i++) {
            String fieldName = fields.get(i).getFieldName();
            String fieldTypeName = fields.get(i).getFieldObjectInspector().getTypeName();
            str_fields.add(new FieldSchema(fieldName, fieldTypeName, "automatically generated"));
          }
        }
        return str_fields;

      } catch(SerDeException e) {
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  private List<FieldSchema> getColumns(ASTNode ast)
  {
    List<FieldSchema> colList = new ArrayList<FieldSchema>();
    int numCh = ast.getChildCount();
    for (int i = 0; i < numCh; i++) {
      FieldSchema col = new FieldSchema();
      ASTNode child = (ASTNode)ast.getChild(i);
      col.setName(unescapeIdentifier(child.getChild(0).getText()));
      ASTNode typeChild = (ASTNode)(child.getChild(1));
      if (typeChild.getToken().getType() == HiveParser.TOK_LIST)
      {
        ASTNode typName = (ASTNode)typeChild.getChild(0);
        col.setType(MetaStoreUtils.getListType(getTypeName(typName.getToken().getType())));
      }
      else if (typeChild.getToken().getType() == HiveParser.TOK_MAP)
      {
        ASTNode ltypName = (ASTNode)typeChild.getChild(0);
        ASTNode rtypName = (ASTNode)typeChild.getChild(1);
        col.setType(MetaStoreUtils.getMapType(getTypeName(ltypName.getToken().getType()), getTypeName(rtypName.getToken().getType())));
      }
      else                                // primitive type
        col.setType(getTypeName(typeChild.getToken().getType()));
       
      if (child.getChildCount() == 3)
        col.setComment(unescapeSQLString(child.getChild(2).getText()));
      colList.add(col);
    }
    return colList;
  }
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    serdeInfo.getParameters().put(org.apache.hadoop.hive.serde.Constants.SERIALIZATION_FORMAT, "1");
   
    List<FieldSchema>  fields = new ArrayList<FieldSchema>();
    sd.setCols(fields);
    for (String col: columns) {
      FieldSchema field = new FieldSchema(col, org.apache.hadoop.hive.serde.Constants.STRING_TYPE_NAME, "'default'");
      fields.add(field);
    }

    tTable.setPartitionKeys(new ArrayList<FieldSchema>());
    for (String partCol : partCols) {
      FieldSchema part = new FieldSchema();
      part.setName(partCol);
      part.setType(org.apache.hadoop.hive.serde.Constants.STRING_TYPE_NAME); // default partition key
      tTable.getPartitionKeys().add(part);
    }
    sd.setNumBuckets(-1);
    return tTable;
  }
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    String part_cols_str = schema.getProperty(org.apache.hadoop.hive.metastore.api.Constants.META_TABLE_PARTITION_COLUMNS);
    t.setPartitionKeys(new ArrayList<FieldSchema>());
    if (part_cols_str != null && (part_cols_str.trim().length() != 0)) {
      String [] part_keys = part_cols_str.trim().split("/");
      for (String key: part_keys) {
        FieldSchema part = new FieldSchema();
        part.setName(key);
        part.setType(org.apache.hadoop.hive.serde.Constants.STRING_TYPE_NAME); // default partition key
        t.getPartitionKeys().add(part);
      }
    }
    t.getSd().setNumBuckets(Integer.parseInt(schema.getProperty(org.apache.hadoop.hive.metastore.api.Constants.BUCKET_COUNT, "-1")));
    String bucketFieldName = schema.getProperty(org.apache.hadoop.hive.metastore.api.Constants.BUCKET_FIELD_NAME);
    t.getSd().setBucketCols(new ArrayList<String>(1));
    if ((bucketFieldName != null) && (bucketFieldName.trim().length() != 0)) {
      t.getSd().setBucketCols(new ArrayList<String>(1));
      t.getSd().getBucketCols().add(bucketFieldName);
    }
   
    t.getSd().setSerdeInfo(new SerDeInfo());
    t.getSd().getSerdeInfo().setParameters(new HashMap<String, String>());
    t.getSd().getSerdeInfo().setName(t.getTableName());
    t.getSd().getSerdeInfo().setSerializationLib(schema.getProperty(org.apache.hadoop.hive.serde.Constants.SERIALIZATION_LIB));
    setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.serde.Constants.SERIALIZATION_CLASS);
    setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.serde.Constants.SERIALIZATION_FORMAT);
    if(org.apache.commons.lang.StringUtils.isNotBlank(schema.getProperty(org.apache.hadoop.hive.serde.Constants.SERIALIZATION_CLASS))) {
      setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.metastore.api.Constants.META_TABLE_SERDE);
    }
    // needed for MetadataTypedColumnSetSerDe and LazySimpleSerDe
    setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.metastore.api.Constants.META_TABLE_COLUMNS);
    // needed for LazySimpleSerDe
    setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.metastore.api.Constants.META_TABLE_COLUMN_TYPES);
    // needed for DynamicSerDe
    setSerdeParam(t.getSd().getSerdeInfo(), schema, org.apache.hadoop.hive.serde.Constants.SERIALIZATION_DDL);
     
    String colstr = schema.getProperty(org.apache.hadoop.hive.metastore.api.Constants.META_TABLE_COLUMNS);
    List<FieldSchema>  fields = new ArrayList<FieldSchema>();
    if(colstr != null) {
      String[] cols =  colstr.split(",");
      for (String colName : cols) {
        FieldSchema col = new FieldSchema(colName, org.apache.hadoop.hive.serde.Constants.STRING_TYPE_NAME, "'default'");
        fields.add(col);
      }
    }
   
    if(fields.size() == 0) {
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    }

    ArrayList<FieldSchema> str_fields = new ArrayList<FieldSchema>();
    // rules on how to recurse the ObjectInspector based on its type
    if (oi.getCategory() != Category.STRUCT) {
      str_fields.add(new FieldSchema(last_name, oi.getTypeName(), "from deserializer"));
    } else {
      List<? extends StructField> fields = ((StructObjectInspector)oi).getAllStructFieldRefs();
      for(int i=0; i<fields.size(); i++) {
        String fieldName = fields.get(i).getFieldName();
        String fieldTypeName = fields.get(i).getFieldObjectInspector().getTypeName();
        str_fields.add(new FieldSchema(fieldName, fieldTypeName, "from deserializer"));
      }
    }
    return str_fields;
  }
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  /**
   * Convert TypeInfo to FieldSchema.
   */
  public static FieldSchema getFieldSchemaFromTypeInfo(String fieldName, TypeInfo typeInfo) {
    return new FieldSchema(
        fieldName, TypeInfoUtils.getTypeStringFromTypeInfo(typeInfo), "generated by TypeInfoUtils.getFieldSchemaFromTypeInfo"
    );
  }
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