程序包 org.meteoinfo.table

类 DataTable

java.lang.Object

org.meteoinfo.table.DataTable

直接已知子类:

TableData

public class DataTable
extends Object

作者:

Yaqiang Wang

字段概要

字段

限定符和类型	字段	说明
protected DataColumnCollection	columns
protected int	nextRowIndex
protected boolean	readOnly
protected DataRowCollection	rows
protected String	tableName
protected Object	tag

构造器概要

构造器

构造器	说明
DataTable()	Constructor
DataTable(String dataTableName)	Constructor

方法概要

限定符和类型	方法	说明
DataColumn	addColumn(int index, String columnName, DataType dataType)	Add a data column
void	addColumn(int index, DataColumn column)	Add a data column by index
DataColumn	addColumn(String columnName, DataType dataType)	Add a data column
void	addColumn(DataColumn column)	Add a data column
void	addColumnData(int index, String colName, DataType dataType, List<Object> colData)	Add column data
void	addColumnData(String colName, String dt, List<Object> colData)	Add column data
void	addColumnData(String colName, DataType dataType, List<Object> colData)	Add column data
void	addColumnData(ColumnData colData)	Add column data
DataRow	addRow()	Add data row
boolean	addRow(DataRow row)	Add a data row
void	addRows(List<DataRow> rows)	Add data rows
boolean	appendRow(DataRow row)	Append a data row
Object	avg(String columns, String filter)
Object	avg(String columns, String filter, String groupBy)
Object	clone()	Clone
DataTable	cloneTable_Field()	Clone table - Vectorlayer with fields
DataTable	colSelect(List<DataColumn> cols)	Create a new data table using selected columns
DataColumn	findColumn(String colName)	Find column by name
List<DataColumn>	findColumns(List<String> colNames)	Get data columns by names
List<DataColumn>	findColumns_Index(List<Integer> colIndex)	Get data columns by index
int	getColumnCount()	Get column count
ColumnData	getColumnData(String colName)	Get column data
ColumnData	getColumnData(List<DataRow> rows, String colName)	Get column data
ColumnData	getColumnData(DataColumn col)	Get column data
List<String>	getColumnNames()	Get column names
DataColumnCollection	getColumns()	Get data columns
int	getRowCount()	Get row count
DataRowCollection	getRows()	Get data rows
DataRowCollection	getRows(List<Integer> idx)	Get data rows
DataRowCollection	getRows(ucar.ma2.Range range)	Get data rows
String	getTableName()	Get table name
Object	getTag()	Get tag
int	getTotalCount()	Get total row count
Object	getValue(int row, int col)	Get the value by row and column index
Object	getValue(int row, String colName)	Get the value by row index and column name
boolean	hasTimeColumn()	Check if the table has time column
String	head(int n)	Convert to string - head
boolean	isReadOnly()	Get if is read only
void	join(DataTable dataTable, String colName)	Join data table
void	join(DataTable dataTable, String colName, boolean isUpdate)	Join data table
void	join(DataTable dataTable, String colName_this, String colName_in, boolean isUpdate)	Join data table
Object	max(String columns, String filter)
Object	max(String columns, String filter, String groupBy)
Object	min(String columns, String filter)
Object	min(String columns, String filter, String groupBy)
DataRow	newRow()	Create a new data row
void	removeColumn(DataColumn column)	Remove a data column
void	removeJoin()	Remove joined data columns
void	removeRow(int rowIdx)	Remove a row
void	removeRow(DataRow row)	Remove a row
void	removeRows(List<DataRow> rows)	Remove rows
void	renameColumn(int colIdx, String fieldName)	Rename column
void	renameColumn(String oldName, String newName)	Rename column
void	renameColumn(DataColumn column, String fieldName)	Rename column
void	saveAsASCIIFile(String fileName)	Save as ASCII file
void	saveAsASCIIFile(String fileName, String delimiter, String dateFormat, String floatFormat)	Save as ASCII file
void	saveAsASCIIFile_format(String fileName, String format)	Save as ASCII file
void	saveAsCSVFile(String fileName)	Save as csv file
void	saveAsCSVFile(String fileName, String format)	Save as csv file
DataTable	select(int r_start, int r_stop, int r_step)	Get a new table by select rows
DataTable	select(int r_start, int r_stop, int r_step, int c_start, int c_stop, int c_step)	Get a new table by select rows
DataTable	select(int r_start, int r_stop, int r_step, List<DataColumn> cols)	Get a new table by select rows
List<DataRow>	select(String expression)	Select data rows
DataTable	select(String expression, DataColumn[] dataColumns)	Select and form a new data table
DataTable	select(List<Integer> rowIndex)	Get a new table by row index
DataTable	select(List<Integer> rowIndex, int c_start, int c_stop, int c_step)	Get a new table by row index and column slice
DataTable	select(List<Integer> rowIndex, List<DataColumn> cols)	Get a new table by row index and columns
DataTable	select(List<Integer> rowIndex, ucar.ma2.Range colRange)	Get a new table by row index and column range
DataTable	select(ucar.ma2.Range rowRange)	Get a new table by row range
DataTable	select(ucar.ma2.Range rowRange, List<DataColumn> cols)	Get a new table by row range and columns
DataTable	select(ucar.ma2.Range rowRange, ucar.ma2.Range colRange)	Get a new table by row range and column range
void	setColumnData(String colName, List<Object> colData)	Add column data
void	setColumnData(DataColumn col, List<Object> colData)	Add column data
void	setReadOnly(boolean readOnly)	Set if is read only
void	setRows(List<DataRow> rows)	Set data rows
void	setTableName(String tableName)	Set tabel name
void	setTag(Object tag)	Set tag
void	setValue(int row, int col, Object value)	Set a vlaue by row and column index
void	setValue(int row, String colName, Object value)	Set a value
void	setValues(String colName, List<Object> values)	Set values
DataTable	sqlSelect(String expression)	Select and form a new data table
String	tail(int n)	Convert to string - tail
String	toString()	Convert to string
String	toString(int decimalNum)	Convert to string
String	toString(String dateFormat)	Convert to string
String	toString(String dateFormat, int decimalNum)	Convert to string

从类继承的方法 java.lang.Object

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

字段详细资料

rows

protected DataRowCollection rows

columns

protected DataColumnCollection columns

tableName

protected String tableName

readOnly

protected boolean readOnly

nextRowIndex

protected int nextRowIndex

tag

protected Object tag

构造器详细资料

DataTable

public DataTable()

Constructor

DataTable

public DataTable(String dataTableName)

Constructor

参数:

dataTableName - The data table name

方法详细资料

getTotalCount

public int getTotalCount()

Get total row count

返回:

Row number

getRowCount

public int getRowCount()

Get row count

返回:

Row count

getColumnCount

public int getColumnCount()

Get column count

返回:

Column count

isReadOnly

public boolean isReadOnly()

Get if is read only

返回:

Boolean

setReadOnly

public void setReadOnly(boolean readOnly)

Set if is read only

参数:

readOnly - Read only

getTableName

public String getTableName()

Get table name

返回:

Table name

setTableName

public void setTableName(String tableName)

Set tabel name

参数:

tableName - Table name

getRows

public DataRowCollection getRows()

Get data rows

返回:

DataRowCollection The data rows

getRows

public DataRowCollection getRows(List<Integer> idx)

Get data rows

参数:

idx - Index

返回:

DataRowCollection The data rows

getRows

public DataRowCollection getRows(ucar.ma2.Range range)

Get data rows

参数:

range - Range

返回:

DataRowCollection The data rows

getColumns

public DataColumnCollection getColumns()

Get data columns

返回:

The data columns

getColumnNames

public List<String> getColumnNames()

Get column names

返回:

Column names

getValue

public Object getValue(int row,
                       String colName)

Get the value by row index and column name

参数:

row - Row index

colName - Column name

返回:

Object The value

getValue

public Object getValue(int row,
                       int col)

Get the value by row and column index

参数:

row - Row index

col - Column index

返回:

Object The value

newRow

public DataRow newRow()
               throws Exception

Create a new data row

返回:

DataRow The new data row

抛出:

Exception

setValue

public void setValue(int row,
                     int col,
                     Object value)

Set a vlaue by row and column index

参数:

row - Row index

col - Column index

value - The value

setValue

public void setValue(int row,
                     String colName,
                     Object value)

Set a value

参数:

row - Row index

colName - Column name

value - The value

setValues

public void setValues(String colName,
                      List<Object> values)

Set values

参数:

colName - Column name

values - Values

setTag

public void setTag(Object tag)

Set tag

参数:

tag - The tag

getTag

public Object getTag()

Get tag

返回:

the tag

findColumn

public DataColumn findColumn(String colName)

Find column by name

参数:

colName - The column name

返回:

The data column

findColumns

public List<DataColumn> findColumns(List<String> colNames)

Get data columns by names

参数:

colNames - Data column names

返回:

Data columns

findColumns_Index

public List<DataColumn> findColumns_Index(List<Integer> colIndex)

Get data columns by index

参数:

colIndex - Data column index

返回:

Data columns

hasTimeColumn

public boolean hasTimeColumn()

Check if the table has time column

返回:

Boolean

addColumn

public DataColumn addColumn(String columnName,
                            DataType dataType)
                     throws Exception

Add a data column

参数:

columnName - Data column name

dataType - Data type

返回:

The data column

抛出:

Exception

addColumn

public DataColumn addColumn(int index,
                            String columnName,
                            DataType dataType)
                     throws Exception

Add a data column

参数:

index - The index

columnName - Data column name

dataType - Data type

返回:

The data column

抛出:

Exception

addColumn

public void addColumn(int index,
                      DataColumn column)

Add a data column by index

参数:

index - The index

column - Data column

addColumn

public void addColumn(DataColumn column)

Add a data column

参数:

column - Data column

removeColumn

public void removeColumn(DataColumn column)

Remove a data column

参数:

column - The data column

renameColumn

public void renameColumn(DataColumn column,
                         String fieldName)

Rename column

参数:

column - The column

fieldName - The new column name

renameColumn

public void renameColumn(String oldName,
                         String newName)

Rename column

参数:

oldName - The old column name

newName - The new column name

renameColumn

public void renameColumn(int colIdx,
                         String fieldName)

Rename column

参数:

colIdx - The column index

fieldName - The new column name

addRow

public boolean addRow(DataRow row)
               throws Exception

Add a data row

参数:

row - The data row

返回:

Boolean

抛出:

Exception

addRow

public DataRow addRow()
               throws Exception

Add data row

返回:

Data row

抛出:

Exception

addRows

public void addRows(List<DataRow> rows)
             throws Exception

Add data rows

参数:

rows - Data rows

抛出:

Exception

appendRow

public boolean appendRow(DataRow row)

Append a data row

参数:

row - Data row

返回:

Boolean

removeRow

public void removeRow(int rowIdx)

Remove a row

参数:

rowIdx - Row index

removeRow

public void removeRow(DataRow row)

Remove a row

参数:

row - The row will be removed

removeRows

public void removeRows(List<DataRow> rows)

Remove rows

参数:

rows - The rows will be removed

setRows

public void setRows(List<DataRow> rows)

Set data rows

参数:

rows - The data rows

setColumnData

public void setColumnData(DataColumn col,
                          List<Object> colData)
                   throws Exception

Add column data

参数:

col - The column

colData - The column data

抛出:

Exception

setColumnData

public void setColumnData(String colName,
                          List<Object> colData)
                   throws Exception

Add column data

参数:

colName - Column name

colData - The column data

抛出:

Exception

addColumnData

public void addColumnData(ColumnData colData)
                   throws Exception

Add column data

参数:

colData - The column data

抛出:

Exception

addColumnData

public void addColumnData(String colName,
                          DataType dataType,
                          List<Object> colData)
                   throws Exception

Add column data

参数:

colName - Column name

dataType - Data type

colData - The column data

抛出:

Exception

addColumnData

public void addColumnData(int index,
                          String colName,
                          DataType dataType,
                          List<Object> colData)
                   throws Exception

Add column data

参数:

index - Column index

colName - Column name

dataType - Data type

colData - The column data

抛出:

Exception

addColumnData

public void addColumnData(String colName,
                          String dt,
                          List<Object> colData)
                   throws Exception

Add column data

参数:

colName - Column name

dt - Data type string

colData - The column data

抛出:

Exception

getColumnData

public ColumnData getColumnData(String colName)

Get column data

参数:

colName - The column name

返回:

Column data

getColumnData

public ColumnData getColumnData(DataColumn col)

Get column data

参数:

col - The data column

返回:

Column data

getColumnData

public ColumnData getColumnData(List<DataRow> rows,
                                String colName)

Get column data

参数:

rows - The data row list

colName - The data column name

返回:

Column values

select

public List<DataRow> select(String expression)

Select data rows

参数:

expression - SQL expression

返回:

Selected data rows

select

public DataTable select(String expression,
                        DataColumn[] dataColumns)

Select and form a new data table

参数:

expression - SQL expression

dataColumns - Data columns

返回:

Selected data table

select

public DataTable select(ucar.ma2.Range rowRange)
                 throws Exception

Get a new table by row range

参数:

rowRange - Row range

返回:

抛出:

Exception

select

public DataTable select(int r_start,
                        int r_stop,
                        int r_step)
                 throws Exception

Get a new table by select rows

参数:

r_start - row start

r_stop - row stop

r_step - row step

返回:

Result table

抛出:

Exception

select

public DataTable select(List<Integer> rowIndex)
                 throws Exception

Get a new table by row index

参数:

rowIndex - Row index

返回:

Result table

抛出:

Exception

select

public DataTable select(ucar.ma2.Range rowRange,
                        ucar.ma2.Range colRange)
                 throws Exception

Get a new table by row range and column range

参数:

rowRange - Row range

colRange - Column range

返回:

Result table

抛出:

Exception

select

public DataTable select(int r_start,
                        int r_stop,
                        int r_step,
                        int c_start,
                        int c_stop,
                        int c_step)
                 throws Exception

Get a new table by select rows

参数:

r_start - Row start

r_stop - Row stop

r_step - Row step

c_start - Column start

c_stop - Column stop

c_step - Column step

返回:

Result table

抛出:

Exception

select

public DataTable select(List<Integer> rowIndex,
                        ucar.ma2.Range colRange)
                 throws Exception

Get a new table by row index and column range

参数:

rowIndex - Row index

colRange - Column range

返回:

Result table

抛出:

Exception

select

public DataTable select(List<Integer> rowIndex,
                        int c_start,
                        int c_stop,
                        int c_step)
                 throws Exception

Get a new table by row index and column slice

参数:

rowIndex - Row index

c_start - Column start

c_stop - Column stop

c_step - Column step

返回:

Result table

抛出:

Exception

select

public DataTable select(ucar.ma2.Range rowRange,
                        List<DataColumn> cols)
                 throws Exception

Get a new table by row range and columns

参数:

rowRange - Row range

cols - Columns

返回:

Result table

抛出:

Exception

select

public DataTable select(int r_start,
                        int r_stop,
                        int r_step,
                        List<DataColumn> cols)
                 throws Exception

Get a new table by select rows

参数:

r_start - Row start

r_stop - Row stop

r_step - Row step

cols - Columns

返回:

Result table

抛出:

Exception

select

public DataTable select(List<Integer> rowIndex,
                        List<DataColumn> cols)
                 throws Exception

Get a new table by row index and columns

参数:

rowIndex - Row index

cols - Columns

返回:

Result table

抛出:

Exception

colSelect

public DataTable colSelect(List<DataColumn> cols)
                    throws Exception

Create a new data table using selected columns

参数:

cols - The columns

返回:

Selected data table

抛出:

Exception

sqlSelect

public DataTable sqlSelect(String expression)

Select and form a new data table

参数:

expression - SQL expression

返回:

Selected data table

max

public Object max(String columns,
                  String filter)

min

public Object min(String columns,
                  String filter)

avg

public Object avg(String columns,
                  String filter)

max

public Object max(String columns,
                  String filter,
                  String groupBy)

min

public Object min(String columns,
                  String filter,
                  String groupBy)

avg

public Object avg(String columns,
                  String filter,
                  String groupBy)

clone

public Object clone()

Clone

覆盖:

clone 在类中 Object

返回:

Cloned DataTable object

cloneTable_Field

public DataTable cloneTable_Field()

Clone table - Vectorlayer with fields

返回:

DataTable

head

public String head(int n)

Convert to string - head

参数:

n - Head row number

返回:

The string

tail

public String tail(int n)

Convert to string - tail

参数:

n - Tail row number

返回:

The string

toString

public String toString()

Convert to string

覆盖:

toString 在类中 Object

返回:

The string

toString

public String toString(String dateFormat)

Convert to string

参数:

dateFormat - Date format string

返回:

The string

toString

public String toString(int decimalNum)

Convert to string

参数:

decimalNum - Decimal number

返回:

The string

toString

public String toString(String dateFormat,
                       int decimalNum)

Convert to string

参数:

dateFormat - Date format string

decimalNum - Decimal number

返回:

The string

saveAsCSVFile

public void saveAsCSVFile(String fileName)
                   throws IOException

Save as csv file

参数:

fileName - File name

抛出:

IOException

saveAsCSVFile

public void saveAsCSVFile(String fileName,
                          String format)
                   throws IOException

Save as csv file

参数:

fileName - File name

format - Format string

抛出:

IOException

saveAsASCIIFile

public void saveAsASCIIFile(String fileName)
                     throws IOException

Save as ASCII file

参数:

fileName - File name

抛出:

IOException

saveAsASCIIFile

public void saveAsASCIIFile(String fileName,
                            String delimiter,
                            String dateFormat,
                            String floatFormat)
                     throws IOException

Save as ASCII file

参数:

fileName - File name

delimiter - Delimiter

dateFormat - Date format string

floatFormat - Float format string

抛出:

IOException

saveAsASCIIFile_format

public void saveAsASCIIFile_format(String fileName,
                                   String format)
                            throws IOException

Save as ASCII file

参数:

fileName - File name

format - Format string

抛出:

IOException

join

public void join(DataTable dataTable,
                 String colName)

Join data table

参数:

dataTable - The input data table

colName - The column name for join

join

public void join(DataTable dataTable,
                 String colName,
                 boolean isUpdate)

Join data table

参数:

dataTable - The input data table

colName - The column name for join

isUpdate - If update the existing values with same column name

join

public void join(DataTable dataTable,
                 String colName_this,
                 String colName_in,
                 boolean isUpdate)

Join data table

参数:

dataTable - The input data table

colName_this - The column name of this data table for join

colName_in - The column name of the input data table for join

isUpdate - If update the existing values with same column name

removeJoin

public void removeJoin()

Remove joined data columns