com.univocity.parsers.fixed
Class FixedWidthFields

java.lang.Object
  com.univocity.parsers.fixed.FixedWidthFields

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

FixedWidthFieldLengths

public class FixedWidthFields
extends Object
implements Cloneable

This class provides the name, length, alignment and padding of each field in a fixed-width record.

Author:

uniVocity Software Pty Ltd - parsers@univocity.com

Constructor Summary

FixedWidthFields(Class beanClass)
Deprecated. use forParsing(Class) and forWriting(Class) to initialize the fields from the given class and filter out getters and setters that target the same field. If the given class has any annotated methods only the setters will be used, making it usable only for parsing.

FixedWidthFields(int... fieldLengths)
Creates a new instance initialized with the lengths of all fields in a fixed-width record.

FixedWidthFields(LinkedHashMap<String,Integer> fields)
Defines a sequence of field names used to refer to columns in the input/output text of an entity, along with their lengths.

FixedWidthFields(String[] headers, int[] lengths)
Defines a sequence of field names used to refer to columns in the input/output text of an entity, along with their lengths.

Method Summary

FixedWidthFields	addField(int length) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(int length, char padding) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(int length, FieldAlignment alignment) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(int length, FieldAlignment alignment, char padding) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(int startPosition, int endPosition) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(int startPosition, int endPosition, char padding) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(int startPosition, int endPosition, FieldAlignment alignment) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(int startPosition, int endPosition, FieldAlignment alignment, char padding) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int length) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int length, char padding) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int length, FieldAlignment alignment) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int length, FieldAlignment alignment, char padding) Adds the length of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int startPosition, int endPosition) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int startPosition, int endPosition, char padding) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int startPosition, int endPosition, FieldAlignment alignment) Adds the range of the next field in a fixed-width record.
FixedWidthFields	addField(String name, int startPosition, int endPosition, FieldAlignment alignment, char padding) Adds the range of the next field in a fixed-width record.
protected FixedWidthFields	clone()
static FixedWidthFields	forParsing(Class beanClass) Creates a new instance initialized from FixedWidth annotations in the fields and methods of a given class.
static FixedWidthFields	forWriting(Class beanClass) Creates a new instance initialized from FixedWidth annotations in the fields and methods of a given class.
FieldAlignment	getAlignment(int position) Returns the alignment of a given field.
FieldAlignment	getAlignment(String fieldName) Returns the alignment of a given field.
FieldAlignment[]	getFieldAlignments() Returns a copy of the sequence of alignment settings to apply over each field in the fixed-width record.
int[]	getFieldLengths() Returns a copy of the sequence of field lengths of a fixed-width record
String[]	getFieldNames() Returns the name of each field in a fixed-width record, if any
char[]	getFieldPaddings() Returns a copy of the sequence of padding characters to apply over each field in the fixed-width record.
int	getFieldsPerRecord() Returns the number of fields in a fixed-width record
int	indexOf(String fieldName) Returns the index of a field name.
void	setAlignment(FieldAlignment alignment, int... positions) Applies alignment to a given list of fields
void	setAlignment(FieldAlignment alignment, String... names) Applies alignment to a given list of fields
void	setFieldLength(int position, int newLength) Modifies the length of a given field
void	setFieldLength(String name, int newLength) Modifies the length of a given field
void	setPadding(char padding, int... positions) Applies a custom padding character to a given list of fields
void	setPadding(char padding, String... names) Applies a custom padding character to a given list of fields
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FixedWidthFields

public FixedWidthFields(LinkedHashMap<String,Integer> fields)

Defines a sequence of field names used to refer to columns in the input/output text of an entity, along with their lengths. The field names defined will be used as headers, having the same effect of a call to CommonSettings.setHeaders(String...).

Parameters:

fields - a LinkedHashMap containing the sequence of fields to be associated with each column in the input/output, with their respective length.

FixedWidthFields

public FixedWidthFields(String[] headers,
                        int[] lengths)

Defines a sequence of field names used to refer to columns in the input/output text of an entity, along with their lengths. The field names defined will be used as headers, having the same effect of a call to CommonSettings.setHeaders(String...).

Parameters:

headers - the sequence of fields to be associated with each column in the input/output

lengths - the sequence of lengths to be associated with each given header. The size of this array must match the number of given headers.

FixedWidthFields

public FixedWidthFields(int... fieldLengths)

Creates a new instance initialized with the lengths of all fields in a fixed-width record.

Parameters:

fieldLengths - The number lengths of all fields in a fixed-width record. All lengths must be greater than 0.

FixedWidthFields

@Deprecated
public FixedWidthFields(Class beanClass)

Deprecated. use forParsing(Class) and forWriting(Class) to initialize the fields from the given class and filter out getters and setters that target the same field. If the given class has any annotated methods only the setters will be used, making it usable only for parsing.

Creates a new instance initialized from FixedWidth annotations in the fields and methods of a given class. Note that all fields should additionally have the Parsed annotation to configure header names and/or their positions.

Parameters:

beanClass - the class whose FixedWidth annotations will be processed to configure this field list.

Method Detail

forParsing

public static FixedWidthFields forParsing(Class beanClass)

Creates a new instance initialized from FixedWidth annotations in the fields and methods of a given class. Note that all fields should additionally have the Parsed annotation to configure header names and/or their positions. Only setter methods will be considered as fields.

Parameters:

beanClass - the class whose FixedWidth annotations will be processed to configure this field list.

Returns:

a new FixedWidthFields instance built with the FixedWidth annotations found in the given class' attributes and methods (excluding getters)

forWriting

public static FixedWidthFields forWriting(Class beanClass)

Creates a new instance initialized from FixedWidth annotations in the fields and methods of a given class. Note that all fields should additionally have the Parsed annotation to configure header names and/or their positions. Only getter methods will be considered as fields.

Parameters:

beanClass - the class whose FixedWidth annotations will be processed to configure this field list.

Returns:

a new FixedWidthFields instance built with the FixedWidth annotations found in the given class' attributes and methods (excluding setters)

addField

public FixedWidthFields addField(int startPosition,
                                 int endPosition)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

startPosition - starting position of the field.

endPosition - ending position of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int startPosition,
                                 int endPosition)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

name - the name of the next field. It is not validated.

startPosition - starting position of the field.

endPosition - ending position of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int startPosition,
                                 int endPosition,
                                 char padding)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

name - the name of the next field. It is not validated.

startPosition - starting position of the field.

endPosition - ending position of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int startPosition,
                                 int endPosition,
                                 FieldAlignment alignment)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

name - the name of the next field. It is not validated.

startPosition - starting position of the field.

endPosition - ending position of the field

alignment - the alignment of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int startPosition,
                                 int endPosition,
                                 FieldAlignment alignment)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

startPosition - starting position of the field.

endPosition - ending position of the field

alignment - the alignment of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int startPosition,
                                 int endPosition,
                                 FieldAlignment alignment,
                                 char padding)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

startPosition - starting position of the field.

endPosition - ending position of the field

alignment - the alignment of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int startPosition,
                                 int endPosition,
                                 char padding)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

startPosition - starting position of the field.

endPosition - ending position of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int startPosition,
                                 int endPosition,
                                 FieldAlignment alignment,
                                 char padding)

Adds the range of the next field in a fixed-width record. The given range cannot overlap with previously defined fields. Blanks will be used to fill any "gap" between record ranges when writing.

Parameters:

name - the name of the next field. It is not validated.

startPosition - starting position of the field.

endPosition - ending position of the field

alignment - the alignment of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int length)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField(5).addField(6)...

Parameters:

length - the length of the next field. It must be greater than 0.

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int length,
                                 FieldAlignment alignment)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField(5).addField(6)...

Parameters:

length - the length of the next field. It must be greater than 0.

alignment - the alignment of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int length)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField("field_1", 5).addField("field_2", 6)...

Parameters:

name - the name of the next field. It is not validated.

length - the length of the next field. It must be greater than 0.

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int length,
                                 FieldAlignment alignment)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField("field_1", 5).addField("field_2", 6)...

Parameters:

name - the name of the next field. It is not validated.

length - the length of the next field. It must be greater than 0.

alignment - the alignment of the field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int length,
                                 char padding)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField(5).addField(6)...

Parameters:

length - the length of the next field. It must be greater than 0.

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(int length,
                                 FieldAlignment alignment,
                                 char padding)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField(5).addField(6)...

Parameters:

length - the length of the next field. It must be greater than 0.

alignment - the alignment of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int length,
                                 char padding)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField("field_1", 5).addField("field_2", 6)...

Parameters:

name - the name of the next field. It is not validated.

length - the length of the next field. It must be greater than 0.

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

addField

public FixedWidthFields addField(String name,
                                 int length,
                                 FieldAlignment alignment,
                                 char padding)

Adds the length of the next field in a fixed-width record. This method can be chained like this: addField("field_1", 5).addField("field_2", 6)...

Parameters:

name - the name of the next field. It is not validated.

length - the length of the next field. It must be greater than 0.

alignment - the alignment of the field

padding - the representation of unused space in this field

Returns:

the FixedWidthFields instance itself for chaining.

getFieldsPerRecord

public int getFieldsPerRecord()

Returns the number of fields in a fixed-width record

Returns:

the number of fields in a fixed-width record

getFieldNames

public String[] getFieldNames()

Returns the name of each field in a fixed-width record, if any

Returns:

the name of each field in a fixed-width record, or null if no name has been defined.

getFieldLengths

public int[] getFieldLengths()

Returns a copy of the sequence of field lengths of a fixed-width record

Returns:

a copy of the sequence of field lengths of a fixed-width record

setFieldLength

public void setFieldLength(String name,
                           int newLength)

Modifies the length of a given field

Parameters:

name - the name of the field whose length must be altered

newLength - the new length of the given field

setFieldLength

public void setFieldLength(int position,
                           int newLength)

Modifies the length of a given field

Parameters:

position - the position of the field whose length must be altered

newLength - the new length of the given field

setAlignment

public void setAlignment(FieldAlignment alignment,
                         int... positions)

Applies alignment to a given list of fields

Parameters:

alignment - the alignment to apply

positions - the positions of the fields that should be aligned

setAlignment

public void setAlignment(FieldAlignment alignment,
                         String... names)

Applies alignment to a given list of fields

Parameters:

alignment - the alignment to apply

names - the names of the fields that should be aligned

indexOf

public int indexOf(String fieldName)

Returns the index of a field name. An IllegalArgumentException will be thrown if no names have been defined.

Parameters:

fieldName - the name of the field to be searched

Returns:

the index of the field, or -1 if it does not exist.

getAlignment

public FieldAlignment getAlignment(int position)

Returns the alignment of a given field.

Parameters:

position - the index of the field whose alignment will be returned

Returns:

the alignment of the field

getAlignment

public FieldAlignment getAlignment(String fieldName)

Returns the alignment of a given field. An IllegalArgumentException will be thrown if no names have been defined.

Parameters:

fieldName - the name of the field whose alignment will be returned

Returns:

the alignment of the given field

getFieldAlignments

public FieldAlignment[] getFieldAlignments()

Returns a copy of the sequence of alignment settings to apply over each field in the fixed-width record.

Returns:

the sequence of alignment settings to apply over each field in the fixed-width record.

getFieldPaddings

public char[] getFieldPaddings()

Returns a copy of the sequence of padding characters to apply over each field in the fixed-width record. The null character ('\0') is used to inform no padding has been explicitly set for a field, and that the default padding character defined in FixedWidthFormat.getPadding() should be used.

Returns:

the sequence of padding characters to apply over each field in the fixed-width record.

setPadding

public void setPadding(char padding,
                       int... positions)

Applies a custom padding character to a given list of fields

Parameters:

padding - the padding to apply

positions - the positions of the fields that should use the given padding character

setPadding

public void setPadding(char padding,
                       String... names)

Applies a custom padding character to a given list of fields

Parameters:

padding - the padding to apply

names - the names of the fields that should use the given padding character

toString

public String toString()

Overrides:

toString in class Object

clone

protected FixedWidthFields clone()

Overrides:

clone in class Object