Examples with NullValue net.sf.jsqlparser.expression.NullValue used on opensource projects

Example 1 with NullValue

use of net.sf.jsqlparser.expression.NullValue in project herddb by diennea.

the class SQLExpressionCompiler method compileExpression.

// this method never returns NULL
public static CompiledSQLExpression compileExpression(String validatedTableAlias, Expression exp) {
    if (exp instanceof BinaryExpression) {
        CompiledSQLExpression compiled = compileSpecialBinaryExpression(validatedTableAlias, exp);
        if (compiled != null) {
            return compiled;
        }
    }
    if (exp instanceof net.sf.jsqlparser.schema.Column) {
        return compileColumnExpression(validatedTableAlias, exp);
    } else if (exp instanceof StringValue) {
        return new ConstantExpression(RawString.of(((StringValue) exp).getValue()));
    } else if (exp instanceof LongValue) {
        try {
            return new ConstantExpression(((LongValue) exp).getValue());
        } catch (NumberFormatException largeNumber) {
            return new ConstantExpression(Double.valueOf(((LongValue) exp).getStringValue()));
        }
    } else if (exp instanceof DoubleValue) {
        return new ConstantExpression(((DoubleValue) exp).getValue());
    } else if (exp instanceof TimestampValue) {
        return new ConstantExpression(((TimestampValue) exp).getValue());
    } else if (exp instanceof NullValue) {
        return new ConstantExpression(null);
    } else if (exp instanceof TimeKeyExpression) {
        TimeKeyExpression ext = (TimeKeyExpression) exp;
        if (CURRENT_TIMESTAMP.equalsIgnoreCase(ext.getStringValue())) {
            return new ConstantExpression(new java.sql.Timestamp(System.currentTimeMillis()));
        } else {
            throw new StatementExecutionException("unhandled expression " + exp);
        }
    } else if (exp instanceof JdbcParameter) {
        int index = ((JdbcParameter) exp).getIndex() - 1;
        return new JdbcParameterExpression(index);
    } else if (exp instanceof AndExpression) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledAndExpression(a, b, c));
    } else if (exp instanceof OrExpression) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledOrExpression(a, b, c));
    } else if (exp instanceof Function) {
        return CompiledFunction.create((Function) exp, validatedTableAlias);
    } else if (exp instanceof Addition) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledAddExpression(a, b, c));
    } else if (exp instanceof Subtraction) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledSubtractExpression(a, b, c));
    } else if (exp instanceof Multiplication) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledMultiplyExpression(a, b, c));
    } else if (exp instanceof Division) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledDivideExpression(a, b, c));
    } else if (exp instanceof Parenthesis) {
        Parenthesis p = (Parenthesis) exp;
        CompiledSQLExpression inner = compileExpression(validatedTableAlias, p.getExpression());
        return new CompiledParenthesisExpression(p.isNot(), inner);
    } else if (exp instanceof EqualsTo) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledEqualsExpression(a, b, c));
    } else if (exp instanceof NotEqualsTo) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledNotEqualsExpression(a, b, c));
    } else if (exp instanceof MinorThan) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledMinorThenExpression(a, b, c));
    } else if (exp instanceof MinorThanEquals) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledMinorThenEqualsExpression(a, b, c));
    } else if (exp instanceof GreaterThan) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledGreaterThenExpression(a, b, c));
    } else if (exp instanceof GreaterThanEquals) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledGreaterThenEqualsExpression(a, b, c));
    } else if (exp instanceof LikeExpression) {
        return tryCompileBinaryExpression(validatedTableAlias, (BinaryExpression) exp, (a, b, c) -> new CompiledLikeExpression(a, b, c));
    } else if (exp instanceof Between) {
        return CompiledBetweenExpression.create(validatedTableAlias, (Between) exp);
    } else if (exp instanceof SignedExpression) {
        SignedExpression s = (SignedExpression) exp;
        CompiledSQLExpression inner = compileExpression(validatedTableAlias, s.getExpression());
        return new CompiledSignedExpression(s.getSign(), inner);
    } else if (exp instanceof InExpression) {
        InExpression in = (InExpression) exp;
        return CompiledInExpression.create(in, validatedTableAlias);
    } else if (exp instanceof IsNullExpression) {
        IsNullExpression i = (IsNullExpression) exp;
        CompiledSQLExpression left = compileExpression(validatedTableAlias, i.getLeftExpression());
        return new CompiledIsNullExpression(i.isNot(), left);
    } else if (exp instanceof CaseExpression) {
        return CompiledCaseExpression.create(validatedTableAlias, (CaseExpression) exp);
    }
    throw new StatementExecutionException("unsupported operand " + exp.getClass() + ", expression is " + exp);
}

Example 2 with NullValue

use of net.sf.jsqlparser.expression.NullValue in project herddb by diennea.

the class HerdDBCLI method rewriteQuery.

private static QueryWithParameters rewriteQuery(String query, TableSpaceMapper mapper, boolean frommysqldump) throws ScriptException {
    try {
        List<Object> parameters = new ArrayList<>();
        if (frommysqldump && query.startsWith("INSERT INTO")) {
            // this is faster than CCJSqlParserUtil and will allow the cache to work at "client-side" too
            QueryWithParameters rewriteSimpleInsertStatement = MySqlDumpInsertStatementRewriter.rewriteSimpleInsertStatement(query);
            if (rewriteSimpleInsertStatement != null) {
                query = rewriteSimpleInsertStatement.query;
                parameters.addAll(rewriteSimpleInsertStatement.jdbcParameters);
                String schema = mapper == null ? null : mapper.getTableSpace(rewriteSimpleInsertStatement.tableName);
                return new QueryWithParameters(query, rewriteSimpleInsertStatement.tableName, parameters, schema);
            }
        }
        String _query = query;
        net.sf.jsqlparser.statement.Statement stmt = PARSER_CACHE.get(_query, () -> {
            return CCJSqlParserUtil.parse(_query);
        });
        if (stmt instanceof Insert) {
            boolean somethingdone = false;
            Insert insert = (Insert) stmt;
            ItemsList itemlist = insert.getItemsList();
            if (itemlist instanceof ExpressionList) {
                ExpressionList list = (ExpressionList) itemlist;
                List<Expression> expressions = list.getExpressions();
                for (int i = 0; i < expressions.size(); i++) {
                    Expression e = expressions.get(i);
                    boolean done = false;
                    if (e instanceof StringValue) {
                        StringValue sv = (StringValue) e;
                        parameters.add(sv.getValue());
                        done = true;
                    } else if (e instanceof LongValue) {
                        LongValue sv = (LongValue) e;
                        parameters.add(sv.getValue());
                        done = true;
                    } else if (e instanceof NullValue) {
                        NullValue sv = (NullValue) e;
                        parameters.add(null);
                        done = true;
                    } else if (e instanceof TimestampValue) {
                        TimestampValue sv = (TimestampValue) e;
                        parameters.add(sv.getValue());
                        done = true;
                    } else if (e instanceof DoubleValue) {
                        DoubleValue sv = (DoubleValue) e;
                        parameters.add(sv.getValue());
                        done = true;
                    }
                    if (done) {
                        somethingdone = true;
                        expressions.set(i, new JdbcParameter());
                    }
                }
                if (somethingdone) {
                    StringBuilder queryResult = new StringBuilder();
                    InsertDeParser deparser = new InsertDeParser(new ExpressionDeParser(null, queryResult), null, queryResult);
                    deparser.deParse(insert);
                    query = queryResult.toString();
                }
            } else if (itemlist instanceof MultiExpressionList) {
                MultiExpressionList mlist = (MultiExpressionList) itemlist;
                List<ExpressionList> lists = mlist.getExprList();
                for (ExpressionList list : lists) {
                    List<Expression> expressions = list.getExpressions();
                    for (int i = 0; i < expressions.size(); i++) {
                        Expression e = expressions.get(i);
                        boolean done = false;
                        if (e instanceof StringValue) {
                            StringValue sv = (StringValue) e;
                            parameters.add(sv.getValue());
                            done = true;
                        } else if (e instanceof LongValue) {
                            LongValue sv = (LongValue) e;
                            parameters.add(sv.getValue());
                            done = true;
                        } else if (e instanceof NullValue) {
                            NullValue sv = (NullValue) e;
                            parameters.add(null);
                            done = true;
                        } else if (e instanceof TimestampValue) {
                            TimestampValue sv = (TimestampValue) e;
                            parameters.add(sv.getValue());
                            done = true;
                        } else if (e instanceof DoubleValue) {
                            DoubleValue sv = (DoubleValue) e;
                            parameters.add(sv.getValue());
                            done = true;
                        }
                        if (done) {
                            somethingdone = true;
                            expressions.set(i, new JdbcParameter());
                        }
                    }
                }
                if (somethingdone) {
                    StringBuilder queryResult = new StringBuilder();
                    InsertDeParser deparser = new InsertDeParser(new ExpressionDeParser(null, queryResult), null, queryResult);
                    deparser.deParse(insert);
                    query = queryResult.toString();
                }
            }
            String schema = mapper == null ? null : mapper.getTableSpace(stmt);
            return new QueryWithParameters(query, null, parameters, schema);
        } else {
            String schema = mapper == null ? null : mapper.getTableSpace(stmt);
            return new QueryWithParameters(query, null, Collections.emptyList(), schema);
        }
    } catch (ExecutionException err) {
        System.out.println("error for query: " + query + " -> " + err.getCause());
        return null;
    }
}