ParquetFileDriver (Asakusa Framework 0.10.3 API)

java.lang.Object
- com.asakusafw.dmdl.spi.ModelAttributeDriver
- - com.asakusafw.dmdl.directio.hive.parquet.ParquetFileDriver

All Implemented Interfaces:

AttributeDriver
```
public class ParquetFileDriver
extends ModelAttributeDriver
```
Processes @directio.hive.parquet attributes.
'@directio.hive.parquet' attribute
The attributed declaration can have:
- with table_name=[string-literal] as explicit table name (default: data model name)
- with format_version=[string-literal] as parquet format version (default: system default)
- with compression=[string-literal] as compression kind name (default: "snappy")
- with block_size=integer as block size (default: system default)
- with block_size=integer as block size (default: system default)
- with data_page_size=integer as data page size(default: system default)
- with dictionary_page_size=integer as dictionary page size (default: system default)
- with enable_dictionary=boolean as dictionary on/off (default: system default)
- with enable_validation=boolean as validation on/off (default: system default)
- with field_mappping=[string-literal] (default: "position")
- with missing_source=[string-literal] (default: "logging")
- with missing_target=[string-literal] (default: "logging")
- with incompatible_type=[string-literal] (default: "fail")
Since:

0.7.0

Nested Class Summary
- Nested classes/interfaces inherited from interface com.asakusafw.dmdl.spi.AttributeDriver
  AttributeDriver.Context

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`ELEMENT_BLOCK_SIZE` The element name of block size.
`static String`	`ELEMENT_COMPRESSION` The element name of compression codec name.
`static String`	`ELEMENT_DATA_PAGE_SIZE` The element name of data page size.
`static String`	`ELEMENT_DICTIONARY_PAGE_SIZE` The element name of dictionary page size.
`static String`	`ELEMENT_ENABLE_DICTIONARY` The element name of dictionary enabled.
`static String`	`ELEMENT_ENABLE_VALIDATION` The element name of validation enabled.
`static String`	`ELEMENT_FIELD_MAPPING` The element name of field mapping strategy.
`static String`	`ELEMENT_FORMAT_VERSION` The element name of parquet format version.
`static String`	`ELEMENT_INCOMPATIBLE_TYPE` The element name of missing incompatible type handling strategy.
`static String`	`ELEMENT_MISSING_SOURCE` The element name of missing source handling strategy.
`static String`	`ELEMENT_MISSING_TARGET` The element name of missing target handling strategy.
`static String`	`ELEMENT_TABLE_NAME` The element name of explicit table name.
`static String`	`TARGET_NAME` The attribute name.

Constructor Summary

Constructors
Constructor and Description

ParquetFileDriver()

Constructors
Constructor and Description
`ParquetFileDriver()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`getTargetName()` Returns the qualified name of the target attribute.
`void`	`process(DmdlSemantics environment, ModelDeclaration declaration, AstAttribute attribute)` Processes and modifies the attributed data model declaration.
`void`	`verify(DmdlSemantics environment, ModelDeclaration declaration, AstAttribute attribute)` Verifies the attributed declaration.

Methods inherited from class com.asakusafw.dmdl.spi.ModelAttributeDriver
process, verify

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TARGET_NAME
```
public static final String TARGET_NAME
```
    The attribute name.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_TABLE_NAME
```
public static final String ELEMENT_TABLE_NAME
```
    The element name of explicit table name.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_FORMAT_VERSION
```
public static final String ELEMENT_FORMAT_VERSION
```
    The element name of parquet format version.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_COMPRESSION
```
public static final String ELEMENT_COMPRESSION
```
    The element name of compression codec name.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_BLOCK_SIZE
```
public static final String ELEMENT_BLOCK_SIZE
```
    The element name of block size.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_DATA_PAGE_SIZE
```
public static final String ELEMENT_DATA_PAGE_SIZE
```
    The element name of data page size.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_DICTIONARY_PAGE_SIZE
```
public static final String ELEMENT_DICTIONARY_PAGE_SIZE
```
    The element name of dictionary page size.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_ENABLE_DICTIONARY
```
public static final String ELEMENT_ENABLE_DICTIONARY
```
    The element name of dictionary enabled.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_ENABLE_VALIDATION
```
public static final String ELEMENT_ENABLE_VALIDATION
```
    The element name of validation enabled.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_FIELD_MAPPING
```
public static final String ELEMENT_FIELD_MAPPING
```
    The element name of field mapping strategy.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_MISSING_SOURCE
```
public static final String ELEMENT_MISSING_SOURCE
```
    The element name of missing source handling strategy.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_MISSING_TARGET
```
public static final String ELEMENT_MISSING_TARGET
```
    The element name of missing target handling strategy.
    
    See Also:
    
    Constant Field Values
  - ELEMENT_INCOMPATIBLE_TYPE
```
public static final String ELEMENT_INCOMPATIBLE_TYPE
```
    The element name of missing incompatible type handling strategy.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ParquetFileDriver
```
public ParquetFileDriver()
```
- Method Detail
  - getTargetName
```
public String getTargetName()
```
    Description copied from interface: AttributeDriver
    
    Returns the qualified name of the target attribute.
    
    Returns:
    
    the target attribute name
  - process
```
public void process(DmdlSemantics environment,
                    ModelDeclaration declaration,
                    AstAttribute attribute)
```
    Description copied from class: ModelAttributeDriver
    
    Processes and modifies the attributed data model declaration.
    
    Specified by:
    
    process in class ModelAttributeDriver
    
    Parameters:
    
    environment - the processing environment
    
    declaration - the model declaration with the attribute
    
    attribute - the attribute with the target name
    
    See Also:
    
    AttributeDriver.getTargetName()
  - verify
```
public void verify(DmdlSemantics environment,
                   ModelDeclaration declaration,
                   AstAttribute attribute)
```
    Description copied from class: ModelAttributeDriver
    
    Verifies the attributed declaration. This will be invoked after all attributes are processed.
    
    Overrides:
    
    verify in class ModelAttributeDriver
    
    Parameters:
    
    environment - the processing environment
    
    declaration - the model declaration with the attribute
    
    attribute - the attribute with the target name
    
    See Also:
    
    AttributeDriver.getTargetName()

Class ParquetFileDriver

'@directio.hive.parquet' attribute

Nested Class Summary

Nested classes/interfaces inherited from interface com.asakusafw.dmdl.spi.AttributeDriver

Field Summary

Constructor Summary

Method Summary

Methods inherited from class com.asakusafw.dmdl.spi.ModelAttributeDriver

Methods inherited from class java.lang.Object

Field Detail

TARGET_NAME

ELEMENT_TABLE_NAME

ELEMENT_FORMAT_VERSION

ELEMENT_COMPRESSION

ELEMENT_BLOCK_SIZE

ELEMENT_DATA_PAGE_SIZE

ELEMENT_DICTIONARY_PAGE_SIZE

ELEMENT_ENABLE_DICTIONARY

ELEMENT_ENABLE_VALIDATION

ELEMENT_FIELD_MAPPING

ELEMENT_MISSING_SOURCE

ELEMENT_MISSING_TARGET

ELEMENT_INCOMPATIBLE_TYPE

Constructor Detail

ParquetFileDriver

Method Detail

getTargetName

process

verify