Package org.h2.schema

Examples of org.h2.schema.Constant

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        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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    public Expression optimize(Session session) {
        if (columnResolver == null) {
            Schema schema = session.getDatabase().findSchema(
                    tableAlias == null ? session.getCurrentSchemaName() : tableAlias);
            if (schema != null) {
                Constant constant = schema.findConstant(columnName);
                if (constant != null) {
                    return constant.getValue();
                }
            }
            String name = columnName;
            if (tableAlias != null) {
                name = tableAlias + "." + name;
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            }
            break;
        }
        case CONSTANTS: {
            for (SchemaObject obj : database.getAllSchemaObjects(DbObject.CONSTANT)) {
                Constant constant = (Constant) obj;
                ValueExpression expr = constant.getValue();
                add(rows,
                        // CONSTANT_CATALOG
                        catalog,
                        // CONSTANT_SCHEMA
                        identifier(constant.getSchema().getName()),
                        // CONSTANT_NAME
                        identifier(constant.getName()),
                        // CONSTANT_TYPE
                        "" + DataType.convertTypeToSQLType(expr.getType()),
                        // REMARKS
                        replaceNullWithEmpty(constant.getComment()),
                        // SQL
                        expr.getSQL(),
                        // ID
                        "" + constant.getId()
                    );
            }
            break;
        }
        case DOMAINS: {
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                    add(datatype.getDropSQL(), false);
                }
                add(datatype.getCreateSQL(), false);
            }
            for (SchemaObject obj : db.getAllSchemaObjects(DbObject.CONSTANT)) {
                Constant constant = (Constant) obj;
                add(constant.getCreateSQL(), false);
            }
            ArrayList<Table> tables = db.getAllTablesAndViews(false);
            // sort by id, so that views are after tables and views on views
            // after the base views
            Collections.sort(tables, new Comparator<Table>() {
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    public int update() {
        session.getUser().checkAdmin();
        session.commit(true);
        Database db = session.getDatabase();
        Constant constant = getSchema().findConstant(constantName);
        if (constant == null) {
            if (!ifExists) {
                throw DbException.get(ErrorCode.CONSTANT_NOT_FOUND_1, constantName);
            }
        } else {
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                return 0;
            }
            throw DbException.get(ErrorCode.CONSTANT_ALREADY_EXISTS_1, constantName);
        }
        int id = getObjectId();
        Constant constant = new Constant(getSchema(), id, constantName);
        expression = expression.optimize(session);
        Value value = expression.getValue(session);
        constant.setValue(value);
        db.addSchemaObject(session, constant);
        return 0;
    }
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    public Expression optimize(Session session) {
        if (columnResolver == null) {
            Schema schema = session.getDatabase().findSchema(
                    tableAlias == null ? session.getCurrentSchemaName() : tableAlias);
            if (schema != null) {
                Constant constant = schema.findConstant(columnName);
                if (constant != null) {
                    return constant.getValue();
                }
            }
            String name = columnName;
            if (tableAlias != null) {
                name = tableAlias + "." + name;
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            }
            break;
        }
        case CONSTANTS: {
            for (SchemaObject obj : database.getAllSchemaObjects(DbObject.CONSTANT)) {
                Constant constant = (Constant) obj;
                ValueExpression expr = constant.getValue();
                add(rows,
                        // CONSTANT_CATALOG
                        catalog,
                        // CONSTANT_SCHEMA
                        identifier(constant.getSchema().getName()),
                        // CONSTANT_NAME
                        identifier(constant.getName()),
                        // CONSTANT_TYPE
                        "" + DataType.convertTypeToSQLType(expr.getType()),
                        // REMARKS
                        replaceNullWithEmpty(constant.getComment()),
                        // SQL
                        expr.getSQL(),
                        // ID
                        "" + constant.getId()
                    );
            }
            break;
        }
        case DOMAINS: {
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