Package tech.tablesaw.io

Class ReadOptions.Builder

java.lang.Object

tech.tablesaw.io.ReadOptions.Builder

Direct Known Subclasses:

CsvReadOptions.Builder, FixedWidthReadOptions.Builder

Enclosing class:

ReadOptions

protected static class ReadOptions.Builder
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected Function<String,Optional<ColumnType>>	columnTypeFunction
protected Map<String,ColumnType>	columnTypeMap
protected ColumnType[]	columnTypes
protected List<ColumnType>	columnTypesToDetect
protected Function<String,ColumnType>	completeColumnTypeFunction
protected String	dateFormat
protected DateTimeFormatter	dateFormatter
protected String	dateTimeFormat
protected DateTimeFormatter	dateTimeFormatter
protected boolean	header
protected boolean	ignoreZeroDecimal
protected Locale	locale
protected int	maxCharsPerColumn
protected boolean	minimizeColumnSizes
protected String[]	missingValueIndicators
protected boolean	sample
protected boolean	skipRowsWithInvalidColumnCount
protected final Source	source
protected String	tableName
protected String	timeFormat
protected DateTimeFormatter	timeFormatter

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	Builder()
protected	Builder(File file)
protected	Builder(InputStream stream)
protected	Builder(InputStreamReader reader)
protected	Builder(Reader reader)
protected	Builder(URL url)
protected	Builder(Source source)

Method Summary

Modifier and Type	Method	Description
ReadOptions.Builder	allowDuplicateColumnNames(Boolean allow)
ReadOptions	build()
ReadOptions.Builder	columnTypes(Function<String,ColumnType> columnTypeFunction)	Provide a function that determines ColumnType for all column names.
ReadOptions.Builder	columnTypes(ColumnType[] columnTypes)	Provide column types for all columns skipping autodetect column type logic.
ReadOptions.Builder	columnTypesPartial(Function<String,Optional<ColumnType>> columnTypeFunction)	Provide a function that determines ColumnType for some column names.
ReadOptions.Builder	columnTypesPartial(Map<String,ColumnType> columnTypeByName)	Provide a map that determines ColumnType for given column names.
ReadOptions.Builder	columnTypesToDetect(List<ColumnType> columnTypesToDetect)
ReadOptions.Builder	dateFormat(DateTimeFormatter dateFormat)
ReadOptions.Builder	dateTimeFormat(DateTimeFormatter dateFormat)
ReadOptions.Builder	header(boolean hasHeader)
ReadOptions.Builder	ignoreZeroDecimal(boolean ignoreZeroDecimal)	Ignore zero value decimals in data values.
ReadOptions.Builder	locale(Locale locale)
ReadOptions.Builder	maxCharsPerColumn(int maxCharsPerColumn)
ReadOptions.Builder	minimizeColumnSizes()	Allow the ColumnTypeDetector to choose shorter column types such as float instead of double when the data will fit in a smaller type
ReadOptions.Builder	missingValueIndicator(String... missingValueIndicators)
ReadOptions.Builder	sample(boolean sample)
ReadOptions.Builder	skipRowsWithInvalidColumnCount(boolean skipRowsWithInvalidColumnCount)	Skip the rows with invalid column count in data values.
ReadOptions.Builder	tableName(String tableName)
ReadOptions.Builder	timeFormat(DateTimeFormatter dateFormat)

Methods inherited from class java.lang.Object

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

Field Details

source

protected final Source source

tableName

protected String tableName

columnTypesToDetect

protected List<ColumnType> columnTypesToDetect

sample

protected boolean sample

dateFormat

protected String dateFormat

dateFormatter

protected DateTimeFormatter dateFormatter

timeFormat

protected String timeFormat

timeFormatter

protected DateTimeFormatter timeFormatter

dateTimeFormat

protected String dateTimeFormat

dateTimeFormatter

protected DateTimeFormatter dateTimeFormatter

locale

protected Locale locale

missingValueIndicators

protected String[] missingValueIndicators

minimizeColumnSizes

protected boolean minimizeColumnSizes

header

protected boolean header

maxCharsPerColumn

protected int maxCharsPerColumn

ignoreZeroDecimal

protected boolean ignoreZeroDecimal

skipRowsWithInvalidColumnCount

protected boolean skipRowsWithInvalidColumnCount

columnTypes

protected ColumnType[] columnTypes

columnTypeMap

protected Map<String,ColumnType> columnTypeMap

columnTypeFunction

protected Function<String,Optional<ColumnType>> columnTypeFunction

completeColumnTypeFunction

protected Function<String,ColumnType> completeColumnTypeFunction

Constructor Details

Builder

protected Builder()

Builder

protected Builder(Source source)

Builder

protected Builder(File file)

Builder

protected Builder(URL url)
           throws IOException

Throws:

IOException

Builder

protected Builder(InputStream stream)

Builder

protected Builder(InputStreamReader reader)

Builder

protected Builder(Reader reader)

Method Details

tableName

public ReadOptions.Builder tableName(String tableName)

header

public ReadOptions.Builder header(boolean hasHeader)

dateFormat

public ReadOptions.Builder dateFormat(DateTimeFormatter dateFormat)

allowDuplicateColumnNames

public ReadOptions.Builder allowDuplicateColumnNames(Boolean allow)

timeFormat

public ReadOptions.Builder timeFormat(DateTimeFormatter dateFormat)

dateTimeFormat

public ReadOptions.Builder dateTimeFormat(DateTimeFormatter dateFormat)

missingValueIndicator

public ReadOptions.Builder missingValueIndicator(String... missingValueIndicators)

maxCharsPerColumn

public ReadOptions.Builder maxCharsPerColumn(int maxCharsPerColumn)

ignoreZeroDecimal

public ReadOptions.Builder ignoreZeroDecimal(boolean ignoreZeroDecimal)

Ignore zero value decimals in data values. Defaults to true.

skipRowsWithInvalidColumnCount

public ReadOptions.Builder skipRowsWithInvalidColumnCount(boolean skipRowsWithInvalidColumnCount)

Skip the rows with invalid column count in data values. Defaluts to false.

sample

public ReadOptions.Builder sample(boolean sample)

locale

public ReadOptions.Builder locale(Locale locale)

columnTypesToDetect

public ReadOptions.Builder columnTypesToDetect(List<ColumnType> columnTypesToDetect)

See Also:

• ColumnTypeDetector

minimizeColumnSizes

public ReadOptions.Builder minimizeColumnSizes()

Allow the ColumnTypeDetector to choose shorter column types such as float instead of double when the data will fit in a smaller type

columnTypes

public ReadOptions.Builder columnTypes(ColumnType[] columnTypes)

Provide column types for all columns skipping autodetect column type logic. The array must contain a ColumnType for each column in the table. An error will be thrown if they don't match up

columnTypes

public ReadOptions.Builder columnTypes(Function<String,ColumnType> columnTypeFunction)

Provide a function that determines ColumnType for all column names. To provide only for some use columnTypesPartial(Function)

This method is generally more efficient because it skips column type detection

columnTypesPartial

public ReadOptions.Builder columnTypesPartial(Function<String,Optional<ColumnType>> columnTypeFunction)

Provide a function that determines ColumnType for some column names. To provide for all column names use columnTypes(Function) that generally is more efficient because it skips column type detection

columnTypesPartial

public ReadOptions.Builder columnTypesPartial(Map<String,ColumnType> columnTypeByName)

Provide a map that determines ColumnType for given column names. Types for not present column names will be autodetected. To provide type for all column names use columnTypes(Function) that generally is more efficient because it skips column type detection

build

public ReadOptions build()