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Thu Nov 18 16:00:00 GMT 1999
Help
package nlbean; import java.awt.*; import java.awt.event.*; import java.io.*; // // Help Dialog utility class // public class Help extends Dialog implements Serializable { private Button close; private TextArea text; private Frame my_frame; Help(Frame parent) { super(parent, "Help dialog", true); my_frame = parent; close = new Button("close"); close.addMouseListener(new MouseClose()); String str = "Help information\n" + "-----------------------\n\n" + "This natural language parser used in this product\n" + "has a large built in vocabulary and examines all\n" + "available databases to learn the names of table\n" + "column names.\n\n" + "Try clicking on the \"Examples\" button to print out\n" + "a few natural language queries in the application's\n" + "text output area.\n\n" + "Type your natural language queries in the input window\n" + "located just below the row of command buttons.\n" + "Your natural language query will be converted to\n" + "SQL and the database(s) accessed -- the results will\n" + "appear in the large scrolling text field at the bottom\n" + "of the application's window.\n\n" + "The three window database viewer is very useful to see\n" + "what local databases are available, the tables contained\n" + "in each available database, and the column names in each\n" + "table. The left most window shows available databases.\n" + "Assuming that at least one database is available, click\n" + "on any database in the left most window; you should then\n" + "see the middle window fill with the table names for the\n" + "database that you just selected. If you click on any\n" + "table name in the middle window, the the right most\n" + "window will display the column names for that selected\n" + "table. Remember that the natural language parser knows\n" + "all of the column names in all available tables in all\n" + "available databases, so feel free to use the column\n" + "names in your queries. If a column name is two distinct\n" + "words, enclose them in single quotes (e.g., 'last name').\n\n" + "Hints for getting along with the parser\n" + "---------------------------------------------------\n\n" + "You should remember that the natural langauge parser\n" + "does not really understand what you are asking the way\n" + "that a human assistant would. The parser does have a very\n" + "large vocabulary of words tagged with possible parts of\n" + "speech for each word. The parser uses many \"semantic\"\n" + "templates for specific sentence and command formats; the\n" + "parser tries to fit your natural language queries into\n" + "each known pattern. This involves trying hundreds of\n" + "possible combinations, but this process usually takes\n" + "less than a second or two; most delays that you notice\n" + "are caused by the database access time.\n\n" + "Frequently asked questions\n" + "-----------------------------------\n\n" + "1. Can I change data in the database? No. A future version\n" + "of this product might allow database administrators and\n" + "\"power users\' to update data, but this product is\n" + "intended for casual database users (who do not want to\n" + "learn SQL) to be able to easily retrieve information\n" + "from databases.\n\n" + "2. This program seems to be all set up for the databases\n" + "that I need. How did this happen? Good question. This\n" + "program is a JavaBean component that has properties for\n" + "specifying database names and other details. Either a\n" + "database administrator or a programmer at your company\n" + "probably set these properties for you.\n\n"; text = new TextArea(str, 10, 48); text.setEditable(false); Panel p = new Panel(); p.add(text); p.add(close); my_frame.add(p); my_frame.pack(); myself=this; } public void setVisible(boolean b) { my_frame.setVisible(b); } private Help myself; // ha ha class MouseClose extends MouseAdapter implements Serializable { public void mouseReleased(MouseEvent mevt) { myself.setVisible(false); } } }
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