Package com.univocity.parsers.common.processor.core

Class AbstractMultiBeanProcessor<C extends Context>

java.lang.Object

com.univocity.parsers.common.processor.core.AbstractMultiBeanProcessor<C>

All Implemented Interfaces:

ConversionProcessor, Processor<C>

Direct Known Subclasses:

AbstractMultiBeanRowProcessor, MultiBeanProcessor

public abstract class AbstractMultiBeanProcessor<C extends Context>
extends Object
implements Processor<C>, ConversionProcessor

A Processor implementation for converting rows extracted from any implementation of AbstractParser into java objects.

The class types passed to the constructor of this class must contain the annotations provided in com.univocity.parsers.annotations.

For each row processed, one or more java bean instances of any given class will be created with their fields populated.

Each individual instance will then be sent to the beanProcessed(Class, Object, Context) method, where the user can access the beans parsed for each row.

Author:

Univocity Software Pty Ltd - parsers@univocity.com

See Also:

• AbstractParser
• Processor
• BeanProcessor

Constructor Summary

Constructors

Constructor	Description
AbstractMultiBeanProcessor(Class... beanTypes)	Creates a processor for java beans of multiple types

Method Summary

Modifier and Type	Method	Description
abstract void	beanProcessed(Class<?> beanType, Object beanInstance, C context)	Invoked by the processor after all values of a valid record have been processed and converted into a java object.
void	convertAll(Conversion... conversions)	Applies a set of Conversion objects over all elements of a record
FieldSet<String>	convertFields(Conversion... conversions)	Applies a set of Conversion objects over fields of a record by name.
FieldSet<Integer>	convertIndexes(Conversion... conversions)	Applies a set of Conversion objects over indexes of a record.
void	convertType(Class<?> type, Conversion... conversions)	Applies a sequence of conversions over values of a given type.
final Class[]	getBeanClasses()
<T> AbstractBeanProcessor<T,C>	getProcessorOfType(Class<T> type)	Returns the BeanProcessor responsible for processing a given class
void	processEnded(C context)	This method will by invoked by the parser once, after the parsing process stopped and all resources were closed.
void	processStarted(C context)	This method will by invoked by the parser once, when it is ready to start processing the input.
final void	rowProcessed(String[] row, C context)	Invoked by the parser after all values of a valid record have been processed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

AbstractMultiBeanProcessor

public AbstractMultiBeanProcessor(Class... beanTypes)

Creates a processor for java beans of multiple types

Parameters:

beanTypes - the classes with their attributes mapped to fields of records parsed by an AbstractParser or written by an AbstractWriter.

Method Details

getBeanClasses

public final Class[] getBeanClasses()

getProcessorOfType

public <T> AbstractBeanProcessor<T,C> getProcessorOfType(Class<T> type)

Returns the BeanProcessor responsible for processing a given class

Type Parameters:

T - the type of java bean being processed

Parameters:

type - the type of java bean being processed

Returns:

the BeanProcessor that handles java beans of the given class.

beanProcessed

public abstract void beanProcessed(Class<?> beanType,
 Object beanInstance,
 C context)

Invoked by the processor after all values of a valid record have been processed and converted into a java object.

Parameters:

beanType - the type of the object created by the parser using the information collected for an individual record.

beanInstance - java object created with the information extracted by the parser for an individual record.

context - A contextual object with information and controls over the current state of the parsing process

processStarted

public void processStarted(C context)

Description copied from interface: Processor

This method will by invoked by the parser once, when it is ready to start processing the input.

Specified by:

processStarted in interface Processor<C extends Context>

Parameters:

context - A contextual object with information and controls over the current state of the parsing process

rowProcessed

public final void rowProcessed(String[] row,
 C context)

Description copied from interface: Processor

Invoked by the parser after all values of a valid record have been processed.

Specified by:

rowProcessed in interface Processor<C extends Context>

Parameters:

row - the data extracted by the parser for an individual record. Note that:

• it will never by null.
• it will never be empty unless explicitly configured using CommonSettings.setSkipEmptyLines(boolean)
• it won't contain lines identified by the parser as comments. To disable comment processing set Format.setComment(char) to '\0'

context - A contextual object with information and controls over the current state of the parsing process

processEnded

public void processEnded(C context)

Description copied from interface: Processor

This method will by invoked by the parser once, after the parsing process stopped and all resources were closed.

It will always be called by the parser: in case of errors, if the end of the input us reached, or if the user stopped the process manually using Context.stop().

Specified by:

processEnded in interface Processor<C extends Context>

Parameters:

context - A contextual object with information and controls over the state of the parsing process

convertIndexes

public FieldSet<Integer> convertIndexes(Conversion... conversions)

Description copied from interface: ConversionProcessor

Applies a set of Conversion objects over indexes of a record.

The idiom to define which indexes should have these conversions applies is as follows:

 processor.convertIndexes(Conversions.trim(), Conversions.toUpperCase()).add(2, 5); // applies trim and uppercase conversions to fields in indexes 2 and 5
 

Specified by:

convertIndexes in interface ConversionProcessor

Parameters:

conversions - The sequence of conversions to be executed in a set of field indexes.

Returns:

A FieldSet for indexes.

convertAll

public void convertAll(Conversion... conversions)

Description copied from interface: ConversionProcessor

Applies a set of Conversion objects over all elements of a record

Specified by:

convertAll in interface ConversionProcessor

Parameters:

conversions - The sequence of conversions to be executed in all elements of a record

convertFields

public FieldSet<String> convertFields(Conversion... conversions)

Description copied from interface: ConversionProcessor

Applies a set of Conversion objects over fields of a record by name.

The idiom to define which fields should have these conversions applied is as follows:

 processor.convertFields(Conversions.trim(), Conversions.toUpperCase()).add("name", "position"); // applies trim and uppercase conversions to fields with headers "name" and "position"
 

Specified by:

convertFields in interface ConversionProcessor

Parameters:

conversions - The sequence of conversions to be executed in a set of field indexes.

Returns:

A FieldSet for field names.

convertType

public void convertType(Class<?> type,
 Conversion... conversions)

Description copied from interface: ConversionProcessor

Applies a sequence of conversions over values of a given type. Used for writing.

Specified by:

convertType in interface ConversionProcessor

Parameters:

type - the type over which a sequence of conversions should be applied

conversions - the sequence of conversions to apply over values of the given type.