Package app.babylon.table.io

Class RowCursorCsv.Builder

java.lang.Object

app.babylon.table.io.RowCursorCsv.Builder

Enclosing class:

RowCursorCsv

public static final class RowCursorCsv.Builder
extends Object

Method Summary

Modifier and Type	Method	Description
RowCursorCsv	build(InputStream inputStream)
RowCursorCsv.Builder	withAutoDetectEncoding(boolean autoDetectEncoding)
RowCursorCsv.Builder	withCharset(Charset charset)
RowCursorCsv.Builder	withColumnRename(ColumnName original, ColumnName newName)
RowCursorCsv.Builder	withColumnRenames(Map<ColumnName,ColumnName> renames)
RowCursorCsv.Builder	withColumnType(ColumnName columnName, Column.Type columnType)	Specifies a source-side column type for this CSV cursor.
RowCursorCsv.Builder	withColumnTypes(Map<ColumnName,Column.Type> columnTypes)	Specifies source-side column types to expose through RowCursor.columns().
RowCursorCsv.Builder	withFixedWidths(int[] fixedWidths)
RowCursorCsv.Builder	withHeaderStrategy(HeaderStrategy headerStrategy)
RowCursorCsv.Builder	withQuote(char quote)
RowCursorCsv.Builder	withRowFilter(RowFilter rowFilter)
RowCursorCsv.Builder	withSelectedColumn(ColumnName columnName)
RowCursorCsv.Builder	withSelectedColumns(ColumnName... columnNames)
RowCursorCsv.Builder	withSelectedColumns(Collection<ColumnName> columnNames)
RowCursorCsv.Builder	withSeparator(char separator)
RowCursorCsv.Builder	withStripping(boolean stripping)

Methods inherited from class java.lang.Object

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

Method Details

withHeaderStrategy

public RowCursorCsv.Builder withHeaderStrategy(HeaderStrategy headerStrategy)

withSelectedColumn

public RowCursorCsv.Builder withSelectedColumn(ColumnName columnName)

withSelectedColumns

public RowCursorCsv.Builder withSelectedColumns(ColumnName... columnNames)

withSelectedColumns

public RowCursorCsv.Builder withSelectedColumns(Collection<ColumnName> columnNames)

withColumnRename

public RowCursorCsv.Builder withColumnRename(ColumnName original,
 ColumnName newName)

withColumnRenames

public RowCursorCsv.Builder withColumnRenames(Map<ColumnName,ColumnName> renames)

withRowFilter

public RowCursorCsv.Builder withRowFilter(RowFilter rowFilter)

withSeparator

public RowCursorCsv.Builder withSeparator(char separator)

withStripping

public RowCursorCsv.Builder withStripping(boolean stripping)

withQuote

public RowCursorCsv.Builder withQuote(char quote)

withFixedWidths

public RowCursorCsv.Builder withFixedWidths(int[] fixedWidths)

withCharset

public RowCursorCsv.Builder withCharset(Charset charset)

withAutoDetectEncoding

public RowCursorCsv.Builder withAutoDetectEncoding(boolean autoDetectEncoding)

withColumnType

public RowCursorCsv.Builder withColumnType(ColumnName columnName,
 Column.Type columnType)

Specifies a source-side column type for this CSV cursor.

This type becomes part of the cursor schema returned by RowCursor.columns() and can therefore influence which builder the row consumer chooses before any rows are read.

For categorical text columns, this is typically only worth doing when the direct parser is materially better than first building the string dictionary.

Parameters:

columnName - the source column name

columnType - the source-side column type

Returns:

this builder

withColumnTypes

public RowCursorCsv.Builder withColumnTypes(Map<ColumnName,Column.Type> columnTypes)

Specifies source-side column types to expose through RowCursor.columns().

These types are consumed before rows are read, so they can select a more direct builder and bypass intermediate string materialization when the type has an efficient slice-based parser.

In normal categorical-text cases, it is often still preferable to leave the source as STRING and let the row consumer build the natural string dictionary.

Parameters:

columnTypes - source-side column types keyed by column name

Returns:

this builder

build

public RowCursorCsv build(InputStream inputStream)