tech.tablesaw.io

Class FileReader

java.lang.Object

tech.tablesaw.io.FileReader

Direct Known Subclasses:

CsvReader, FixedWidthReader

public abstract class FileReader
extends Object

Constructor Summary

Constructors

Constructor and Description
FileReader() Constructs a CsvReader

Method Summary

Modifier and Type	Method and Description
String[]	getColumnNames(ReadOptions options, ColumnType[] types, com.univocity.parsers.common.AbstractParser<?> parser) Returns the column names for each column in the source.
ColumnType[]	getColumnTypes(Reader reader, ReadOptions options, int linesToSkip, com.univocity.parsers.common.AbstractParser<?> parser) Returns an array containing the inferred columnTypes for the file being read, as calculated by the ColumnType inference logic.
protected String	getTypeString(Table structure)
protected Table	parseRows(ReadOptions options, boolean headerOnly, Reader reader, ColumnType[] types, com.univocity.parsers.common.AbstractParser<?> parser)

Methods inherited from class java.lang.Object

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

Constructor Detail

FileReader

public FileReader()

Constructs a CsvReader

Method Detail

getColumnTypes

public ColumnType[] getColumnTypes(Reader reader,
                                   ReadOptions options,
                                   int linesToSkip,
                                   com.univocity.parsers.common.AbstractParser<?> parser)

Returns an array containing the inferred columnTypes for the file being read, as calculated by the ColumnType inference logic. These types may not be correct.

getColumnNames

public String[] getColumnNames(ReadOptions options,
                               ColumnType[] types,
                               com.univocity.parsers.common.AbstractParser<?> parser)

Returns the column names for each column in the source.

parseRows

protected Table parseRows(ReadOptions options,
                          boolean headerOnly,
                          Reader reader,
                          ColumnType[] types,
                          com.univocity.parsers.common.AbstractParser<?> parser)

getTypeString

protected String getTypeString(Table structure)