com.univocity.parsers.annotations

Annotation Type Parsed

@Retention(value=RUNTIME)
 @Inherited
 @Target(value={FIELD,METHOD,ANNOTATION_TYPE})
public @interface Parsed

Indicates the field is parsed. If the annotated field type is not a String, it will be automatically converted using one of the existing Conversion implementations in package com.univocity.parsers.conversions.

Commonly used for java beans processed using BeanProcessor and/or BeanWriterProcessor

Implementation note: All annotations in @Parsed fields are processed by AnnotationHelper

Author:

Univocity Software Pty Ltd - [email protected]

See Also:

Conversion, Conversions, BeanProcessor, BeanWriterProcessor, AnnotationHelper

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	applyDefaultConversion Flag to indicate whether the parsed field should be converted automatically based on the field type.
String	defaultNullRead The default value to assign to this field in the parsed value is null
String	defaultNullWrite The default value to read from this field if it is null.
String[]	field The possible field names of a record.
int	index Field position in a parsed record

Element Detail

field

public abstract String[] field

The possible field names of a record. If multiple names are provided, the parser/writer will attempt to match the given names against the headers provided (i.e. headers found in the input when parsing with CommonParserSettings.isHeaderExtractionEnabled(), or manually set using CommonSettings.setHeaders(String...) for writing or parsing)

Returns:

the possible field names (optional if the index is provided)

Default:

{}

index

public abstract int index

Field position in a parsed record

Returns:

the position of this field (optional if the field name is provided)

Default:

-1

defaultNullRead

public abstract String defaultNullRead

The default value to assign to this field in the parsed value is null

The String literal "null" will be interpreted as a regular null.

Use "'null"' if you want the default value to be the string "null"

this value will have different effects depending on the field type:

• on fields of type Date or Calendar: if the null value is "now", the result of new Date() or Calendar.getInstance() will be used.
• on numeric fields (primitives, wrappers and BigDecimal and BigInteger): if the null value contains a number, e.g. "50.01", it will be parsed and assigned to the field.
• on boolean and Boolean fields: if the null value contains a String, the result of Boolean.valueOf(defaultNullRead()) will assigned to the field.
• on char and Character fields: if the null value contains a String, the result of defaultNullRead().charAt(0) will assigned to the field. An exception will be thrown if the length of this String is different than 1

Returns:

the default String to return when the parsed value is null

Default:

"null"

defaultNullWrite

public abstract String defaultNullWrite

The default value to read from this field if it is null. Used for writing to an output by BeanWriterProcessor.

The String literal "null" will be interpreted as a regular null.

Use "'null"' if you want the default value to be the string "null"

Returns:

default String to write when the input is null.

Default:

"null"

applyDefaultConversion

public abstract boolean applyDefaultConversion

Flag to indicate whether the parsed field should be converted automatically based on the field type. For example, if the annotated field is a BigDecimal, then BigDecimalConversion will be used to convert Strings to BigDecimal when reading and BigDecimal to String when writing. You may want to disable the default field conversion when using custom conversions through DefaultConversionProcessor.convertFields(Conversion...),DefaultConversionProcessor.convertIndexes(Conversion...) or DefaultConversionProcessor.convertAll(Conversion...).

Returns:

flag indicating whether the default conversion, based on the field type, is to be applied for this field.

Default:

true