| Method Summary |
|
| public void | addColumn(Column col)
Called from ReportReader.column to add a column to a
data source. |
| public boolean | alreadyUsedSourceFile()
Returns true if this data source uses a file to retrieve
data and and has already done so. |
| abstract public boolean | areRecordsSelectable()
Used to enable/disable the "Select Records" menu item. |
| abstract public boolean | areRecordsSortable()
Used to enable/disable the "Sort By" menu item. |
| abstract public boolean | canGroupRecords()
Used to enable/disable the "Group By" menu item. |
| abstract public boolean | canJoinTables()
Used to enable/disable the "Table Linker" menu item. |
| public boolean | canRunReports()
Used to enable/disable the "Run" and "Export" menu
items. |
| abstract public Iterator | columns()
Returns an iterator over all columns. |
| public Iterator | columnsInTablesUsedInReport()
Returns an iterator over all the columns in only the tables used by the
report, or over all columns if this data source does not have tables. |
| public boolean | containsReferenceTo(Parameter p)
Returns true if the specified parameter exists within this
data source's query. |
| abstract protected void | doWriteXML(XMLWriter out)
|
| abstract public DataCursor | execute()
|
| abstract public Column | findColumn(Object id)
Given an id, returns the column that has that id. |
| public Query | getQuery()
|
| public Report | getReport()
|
| public int | indexOfSelectable(Selectable sel)
Returns the index of the specified selectable. |
| abstract public boolean | isConnectionEditable()
Used to enable/disable the "Connection" menu item. |
| abstract public boolean | isSQLGenerated()
Used to enable/disable the "SQL Query Text" menu item. |
| public boolean | needsSourceFile()
Returns true if this data source uses a file to retrieve
data and does not yet have one. |
| public void | readMetadataFrom(String urlString)
Reads metadata from a URL. |
| public void | reloadColumns()
Called from Report.reloadColumns/code>, this method gives the
data source a chance to tell its ancillary objects (such as the query)
to reload column objects.
This is necessary, for example, after a SQL database data source has
reloaded all of its table and column information. |
| public void | removeSort(Selectable s)
|
| public void | reuseSourceFile()
Tells this data source to re-use (perhaps re-open) the current data
source file. |
| public void | setSourceFile(String filePath)
Accepts the path to a data source file. |
| abstract public Iterator | tables()
Returns an iterator over all tables, or null if the
data source does not have tables (for example, a character-separated
file data source). |
| abstract public Iterator | tablesUsedInReport()
Returns an iterator over all tables actually used in the report, or
null if the data source does not have tables (for example,
a character-separated file data source). |
| public boolean | usesSourceFile()
Returns true if this data source uses a file to retrieve
data. |
| public void | writeXML(XMLWriter out)
Writes this data source and its query as an XML tag. |
