SQLite
public interface Function
class SinFunc implements SQLite.Function { public void function(SQLite.FunctionContext fc, String args[]) { try { Double d = new Double(args[0]); fc.set_result(Math.sin(d.doubleValue())); } catch (Exception e) { fc.set_error("sin(" + args[0] + "):" + e); } } ... } SQLite.Database db = new SQLite.Database(); db.open("db", 0); db.create_function("sin", 1, SinFunc); ... db.exec("select sin(1.0) from test", null);
Method Summary | |
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void | function(FunctionContext fc, String[] args)
Callback for regular function.
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void | last_step(FunctionContext fc)
Callback for final step in aggregate function.
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void | step(FunctionContext fc, String[] args)
Callback for one step in aggregate function.
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Parameters: fc function's context for reporting result args String array of arguments
Parameters: fc function's context for reporting result
Parameters: fc function's context for reporting result args String array of arguments