org.jfree.report.data
Class GlobalView
java.lang.Object
org.jfree.report.data.GlobalView
- DataRow, DataSet
The global view holds all *named* data columns. Expressions which have no
name will not appear here. There is a slot for each name - if expressions
share the same name, the last name wins.
This acts as some kind of global variables heap - which allows named
functions to export their values to a global space.
This datarow is optimized for named access - the sequential access is only
generated when absolutly needed.
GlobalView | advance()
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static GlobalView | createView()
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GlobalView | derive()
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Object | get(String col) - Returns the value of the function, expression or column using its specific
name.
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Object | get(int col) - Returns the value of the expression or column in the tablemodel using the
given column number as index.
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int | getColumnCount() - Returns the number of columns, expressions and functions and marked
ReportProperties in the report.
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String | getColumnName(int col) - Returns the name of the column, expression or function.
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DataFlags | getFlags(String col) - Queries lowlevel meta-data for the current value of the specified column.
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DataFlags | getFlags(int col) - Queries lowlevel meta-data for the current value of the specified column.
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void | putField(String name, Object value, boolean update) - This adds the expression to the data-row and queries the expression for the
first time.
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void | removeColumn(String name) - Note: Dont remove the column.
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get
public Object get(String col)
throws DataSourceException
Returns the value of the function, expression or column using its specific
name. The given name is translated into a valid column number and the the
column is queried. For functions and expressions, the
getValue()
method is called and for columns from the
tablemodel the tablemodel method getValueAt(row, column)
gets
called.
- get in interface DataRow
get
public Object get(int col)
throws DataSourceException
Returns the value of the expression or column in the tablemodel using the
given column number as index. For functions and expressions, the
getValue()
method is called and for columns from the
tablemodel the tablemodel method getValueAt(row, column)
gets
called.
- get in interface DataRow
- get in interface DataSet
getColumnName
public String getColumnName(int col)
Returns the name of the column, expression or function. For columns from
the tablemodel, the tablemodels getColumnName
method is
called. For functions, expressions and report properties the assigned name
is returned.
- getColumnName in interface DataRow
- getColumnName in interface DataSet
getFlags
public DataFlags getFlags(String col)
Queries lowlevel meta-data for the current value of the specified column.
- getFlags in interface DataRow
col
- the colum for which to query the meta-data flags
- the dataflag collection for the value in the named column
getFlags
public DataFlags getFlags(int col)
Queries lowlevel meta-data for the current value of the specified column.
- getFlags in interface DataRow
col
- the colum for which to query the meta-data flags
- the dataflag collection for the value in the specified column
putField
public void putField(String name,
Object value,
boolean update)
throws DataSourceException
This adds the expression to the data-row and queries the expression for the
first time.
name
- the name of the field (cannot be null)value
- the value of that field (may be null)
removeColumn
public void removeColumn(String name)
Note: Dont remove the column. It will stay around here as long as the
process lives.