+
−/*
+
− * This Source Code Form is subject to the terms of the Mozilla Public
+
− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 1997 - July 2008 CWI, August 2008 - 2020 MonetDB B.V.
+
− */
+
−
+
−import java.sql.*;
+
−
+
−public class Test_CallableStmt {
+
−	public static void main(String[] args) throws Exception {
+
−		Connection con = DriverManager.getConnection(args[0]);
+
−		Statement stmt = null;
+
−		CallableStatement cstmt = null;
+
−		try {
+
−			String tbl_nm = "tbl6402";
+
−			String proc_nm = "proc6402";
+
−
+
−			stmt = con.createStatement();
+
−
+
−			// create a test table.
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−			stmt.executeUpdate("CREATE TABLE IF NOT EXISTS " + tbl_nm + " (tint int, tdouble double, tbool boolean, tvarchar varchar(15), tclob clob, turl url, tclen int);");
+
−			System.out.println("Created table: " + tbl_nm);
+
−
+
−			// create a procedure with multiple different IN parameters which inserts a row into a table of which one column is computed.
+
−			stmt.executeUpdate("CREATE PROCEDURE " + proc_nm + " (myint int, mydouble double, mybool boolean, myvarchar varchar(15), myclob clob, myurl url) BEGIN" +
+
−				" INSERT INTO " + tbl_nm + " (tint, tdouble, tbool, tvarchar, tclob, turl, tclen) VALUES (myint, mydouble, mybool, myvarchar, myclob, myurl, LENGTH(myvarchar) + LENGTH(myclob)); " +
+
−				"END;");
+
−			System.out.println("Created procedure: " + proc_nm);
+
−
+
−			// make sure we can call the procedure the old way (as string)
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−			stmt.executeUpdate("call " + proc_nm + "(1, 1.1, true,'one','ONE', 'www.monetdb.org');");
+
−			System.out.println("Called procedure (1): " + proc_nm);
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−			showContents(con, tbl_nm);
+
−
+
−
+
−			// now use a CallableStament object
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−			cstmt = con.prepareCall(" { call " + proc_nm + " (?,?, ?, ? , ?,?) } ;");
+
−			System.out.println("Prepared Callable procedure: " + proc_nm);
+
−
+
−			// specify first set of params
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−			cstmt.setInt(1, 2);
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−			cstmt.setDouble(2, 2.02);
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−			cstmt.setBoolean(3, true);
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−			cstmt.setString(4, "Two");
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−			Clob myclob = con.createClob();
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−			myclob.setString(1, "TWOs");
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−			cstmt.setClob(5, myclob);
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−			cstmt.setString(6, "http://www.monetdb.org/");
+
−			cstmt.execute();
+
−			System.out.println("Called Prepared procedure (1): " + proc_nm);
+
−			showParams(cstmt);
+
−			showContents(con, tbl_nm);
+
−
+
−			myclob.setString(1, "TREEs");
+
−			// specify second set of params (some (1 and 3 and 5) are left the same)
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−			cstmt.setDouble(2, 3.02);
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−			cstmt.setString(4, "Tree");
+
−			cstmt.setURL(6, new java.net.URL("https://www.monetdb.org/"));
+
−			cstmt.execute();
+
−			System.out.println("Called Prepared procedure (2): " + proc_nm);
+
−			// showParams(cstmt);
+
−			showContents(con, tbl_nm);
+
−
+
−			// specify third set of params (some (1 and 2) are left the same)
+
−			cstmt.setInt(1, 4);
+
−			cstmt.setBoolean(3, false);
+
−			cstmt.setString(4, "Four");
+
−			cstmt.executeUpdate();
+
−			System.out.println("Called Prepared procedure (3): " + proc_nm);
+
−			showContents(con, tbl_nm);
+
−
+
−			// test setNull() also
+
−			cstmt.setNull(3, Types.BOOLEAN);
+
−			cstmt.setNull(5, Types.CLOB);
+
−			cstmt.setNull(2, Types.DOUBLE);
+
−			cstmt.setNull(4, Types.VARCHAR);
+
−			cstmt.setNull(1, Types.INTEGER);
+
−			cstmt.executeUpdate();
+
−			System.out.println("Called Prepared procedure (with NULLs): " + proc_nm);
+
−			showContents(con, tbl_nm);
+
−
+
−
+
−			System.out.println("Test completed. Cleanup procedure and table.");
+
−			stmt.execute("DROP PROCEDURE IF EXISTS " + proc_nm + ";");
+
−			stmt.execute("DROP TABLE     IF EXISTS " + tbl_nm + ";");
+
−
+
−		} catch (SQLException e) {
+
−			System.out.println("main failed: " + e.getMessage());
+
−			System.out.println("ABORTING TEST");
+
−		} finally {
+
−			try {
+
−				if (cstmt != null)
+
−					cstmt.close();
+
−				if (stmt != null)
+
−					stmt.close();
+
−			} catch (SQLException e) { /* ignore */ }
+
−		}
+
−
+
−		con.close();
+
−	}
+
−
+
−
+
−	// some utility methods for showing table content and params meta data
+
−	static void showContents(Connection con, String tblnm) {
+
−		Statement stmt = null;
+
−		ResultSet rs = null;
+
−		try {
+
−			stmt = con.createStatement();
+
−			rs = stmt.executeQuery("SELECT * FROM " + tblnm);
+
−			if (rs != null) {
+
−				ResultSetMetaData rsmd = rs.getMetaData();
+
−				System.out.println("Table " + tblnm + " has " + rsmd.getColumnCount() + " columns:");
+
−				for (int col = 1; col <= rsmd.getColumnCount(); col++) {
+
−					System.out.print("\t" + rsmd.getColumnLabel(col));
+
−				}
+
−				System.out.println();
+
−				while (rs.next()) {
+
−					for (int col = 1; col <= rsmd.getColumnCount(); col++) {
+
−						System.out.print("\t" + rs.getString(col));
+
−					}
+
−					System.out.println();
+
−				}
+
−			} else
+
−				System.out.println("failed to execute query: SELECT * FROM " + tblnm);
+
−		} catch (SQLException e) {
+
−			System.out.println("showContents failed: " + e.getMessage());
+
−		} finally {
+
−			try {
+
−				if (rs != null)
+
−					rs.close();
+
−				if (stmt != null)
+
−					stmt.close();
+
−			} catch (SQLException e) { /* ignore */ }
+
−		}
+
−	}
+
−
+
−	static void showParams(PreparedStatement stmt) {
+
−		try {
+
−			ParameterMetaData pmd = stmt.getParameterMetaData();
+
−			System.out.println(pmd.getParameterCount() + " parameters reported:");
+
−			for (int parm = 1; parm <= pmd.getParameterCount(); parm++) {
+
−				System.out.print(parm + ".");
+
−				int nullable = pmd.isNullable(parm);
+
−				System.out.println("\tnullable  " + nullable + " (" + paramNullableName(nullable) + ")");
+
−				System.out.println("\tsigned    " + pmd.isSigned(parm));
+
−				System.out.println("\tprecision " + pmd.getPrecision(parm));
+
−				System.out.println("\tscale     " + pmd.getScale(parm));
+
−				System.out.println("\ttype      " + pmd.getParameterType(parm));
+
−				System.out.println("\ttypename  " + pmd.getParameterTypeName(parm));
+
−				System.out.println("\tclassname " + pmd.getParameterClassName(parm));
+
−				int mode = pmd.getParameterMode(parm);
+
−				System.out.println("\tmode      " + mode + " (" + paramModeName(mode) + ")");
+
−			}
+
−		} catch (SQLException e) {
+
−			System.out.println("showParams failed: " + e.getMessage());
+
−		}
+
−	}
+
−
+
−	static String paramNullableName(int nullable) {
+
−		if (nullable == ParameterMetaData.parameterNoNulls)
+
−			return "NO";
+
−		if (nullable == ParameterMetaData.parameterNullable)
+
−			return "YA";
+
−		if (nullable == ParameterMetaData.parameterNullableUnknown)
+
−			return "UNKNOWN";
+
−		return "INVALID" + nullable;
+
−	}
+
−
+
−	static String paramModeName(int mode) {
+
−		if (mode == ParameterMetaData.parameterModeIn)
+
−			return "IN";
+
−		if (mode == ParameterMetaData.parameterModeInOut)
+
−			return "INOUT";
+
−		if (mode == ParameterMetaData.parameterModeOut)
+
−			return "OUT";
+
−		if (mode == ParameterMetaData.parameterModeUnknown)
+
−			return "UNKNOWN";
+
−		return "INVALID" + mode;
+
−	}
+
−}