Examples of org.h2.result.UpdatableRow

org.h2.result.UpdatableRow
This class is used for updatable result sets. An updatable row provides functions to update the current row in a result set.

        testReadOnly();
        testAdapter();
    }


    private static void testAdapter() {
        TraceSystem ts = new TraceSystem(null);
        ts.setLevelFile(TraceSystem.ADAPTER);
        ts.getTrace("test").info("test");
        ts.close();
    }

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        ts.getTrace("test").info("test");
        ts.close();
    }


    private void testTraceDebug() {
        TraceSystem ts = new TraceSystem(null);
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        ts.setSysOut(new PrintStream(out));
        ts.setLevelSystemOut(TraceSystem.DEBUG);
        ts.getTrace("test").debug(new Exception("error"), "test");
        ts.close();
        String outString = new String(out.toByteArray());
        assertContains(outString, "error");
        assertContains(outString, "Exception");
        assertContains(outString, "test");
    }

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    private void testReadOnly() throws Exception {
        String readOnlyFile = getBaseDir() + "/readOnly.log";
        IOUtils.delete(readOnlyFile);
        IOUtils.openFileOutputStream(readOnlyFile, false).close();
        FileSystem.getInstance(getBaseDir()).setReadOnly(readOnlyFile);
        TraceSystem ts = new TraceSystem(readOnlyFile);
        ts.setLevelFile(TraceSystem.INFO);
        ts.getTrace("test").info("test");
        IOUtils.delete(readOnlyFile);
        ts.close();
    }

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            debugCodeCall("getConcurrency");
            checkClosed();
            if (!updatable) {
                return ResultSet.CONCUR_READ_ONLY;
            }
            UpdatableRow row = new UpdatableRow(conn, result);
            return row.isUpdatable() ? ResultSet.CONCUR_UPDATABLE : ResultSet.CONCUR_READ_ONLY;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
    }

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            if (insertRow != null) {
                throw DbException.get(ErrorCode.NOT_ON_UPDATABLE_ROW);
            }
            checkOnValidRow();
            if (updateRow != null) {
                UpdatableRow row = getUpdatableRow();
                Value[] current = new Value[columnCount];
                for (int i = 0; i < updateRow.length; i++) {
                    current[i] = get(i + 1);
                }
                row.updateRow(current, updateRow);
                for (int i = 0; i < updateRow.length; i++) {
                    if (updateRow[i] == null) {
                        updateRow[i] = current[i];
                    }
                }
                Value[] patch = row.readRow(updateRow);
                patchCurrentRow(patch);
                updateRow = null;
            }
        } catch (Exception e) {
            throw logAndConvert(e);

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    }


    // =============================================================


    private UpdatableRow getUpdatableRow() throws SQLException {
        UpdatableRow row = new UpdatableRow(conn, result);
        if (!row.isUpdatable()) {
            throw DbException.get(ErrorCode.RESULT_SET_NOT_UPDATABLE);
        }
        return row;
    }

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            debugCodeCall("getConcurrency");
            checkClosed();
            if (!updatable) {
                return ResultSet.CONCUR_READ_ONLY;
            }
            UpdatableRow row = new UpdatableRow(conn, result);
            return row.isUpdatable() ? ResultSet.CONCUR_UPDATABLE : ResultSet.CONCUR_READ_ONLY;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
    }

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            if (insertRow != null) {
                throw DbException.get(ErrorCode.NOT_ON_UPDATABLE_ROW);
            }
            checkOnValidRow();
            if (updateRow != null) {
                UpdatableRow row = getUpdatableRow();
                Value[] current = new Value[columnCount];
                for (int i = 0; i < updateRow.length; i++) {
                    current[i] = get(i + 1);
                }
                row.updateRow(current, updateRow);
                for (int i = 0; i < updateRow.length; i++) {
                    if (updateRow[i] == null) {
                        updateRow[i] = current[i];
                    }
                }
                Value[] patch = row.readRow(updateRow);
                patchCurrentRow(patch);
                updateRow = null;
            }
        } catch (Exception e) {
            throw logAndConvert(e);

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    }


    // =============================================================


    private UpdatableRow getUpdatableRow() throws SQLException {
        UpdatableRow row = new UpdatableRow(conn, result);
        if (!row.isUpdatable()) {
            throw DbException.get(ErrorCode.RESULT_SET_NOT_UPDATABLE);
        }
        return row;
    }

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            debugCodeCall("getConcurrency");
            checkClosed();
            if (!updatable) {
                return ResultSet.CONCUR_READ_ONLY;
            }
            UpdatableRow row = new UpdatableRow(conn, result);
            return row.isUpdatable() ? ResultSet.CONCUR_UPDATABLE : ResultSet.CONCUR_READ_ONLY;
        } catch (Exception e) {
            throw logAndConvert(e);
        }
    }

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