Examples with Expression de.neemann.digital.hdl.model2.expression.Expression used on opensource projects

Example 51 with Expression

use of de.neemann.digital.hdl.model2.expression.Expression in project OpenNotebook by jaltekruse.

the class AdditionPropertyOfEquality method generateExpression.

@Override
protected Node[] generateExpression(int difficulty) throws NodeException {
    Node[] n = new Node[2];
    if (difficulty == ProblemGenerator.EASY) {
        double[] numPair = ExUtil.pairOfCleanAddingNumbers(100);
        if (ExUtil.randomBoolean()) {
            numPair[1] = -1 * numPair[1];
        }
        n[1] = new Expression(new Operator.Equals(), ExUtil.randomVar(), new Number(numPair[0]));
        n[0] = ((Expression) n[1]).applyOpToBothSides(new Operator.Addition(), new Number(numPair[1]), true);
        n[0] = n[0].smartNumericSimplify();
    } else if (difficulty == ProblemGenerator.MEDIUM) {
        n[1] = new Expression(new Operator.Equals(), ExUtil.randomVar(), new Number(ExUtil.randomInt(5, 30, true)));
        n[0] = ((Expression) n[1]).applyOpToBothSides(new Operator.Addition(), new Number(ExUtil.randomInt(5, 30, true)), true);
        n[0] = n[0].smartNumericSimplify();
    } else if (difficulty == ProblemGenerator.HARD) {
        n[1] = new Expression(new Operator.Equals(), ExUtil.randomVar(), new Number(ExUtil.randomInt(5, 30, true)));
        Expression sumNode = ExUtil.randomAdditionOrSubtraction(5, 30);
        Node sum = sumNode.numericSimplify();
        n[0] = n[1].cloneNode();
        Node newLeft = null, newRight = null;
        if (ExUtil.randomBoolean()) {
            newLeft = ((Expression) n[0]).getChild(0).addNodeToExpression(sumNode);
            newRight = ((Expression) n[0]).getChild(1).addNodeToExpression(sum);
        } else {
            newLeft = ((Expression) n[0]).getChild(0).addNodeToExpression(sum);
            newRight = ((Expression) n[0]).getChild(1).addNodeToExpression(sumNode);
        }
        n[0] = new Expression(new Operator.Equals(), newLeft, newRight);
    }
    n[0] = ExUtil.flipSides((Expression) n[0]);
    return n;
}

Example 52 with Expression

use of de.neemann.digital.hdl.model2.expression.Expression in project siena by mandubian.

the class FullText method parseKey.

/**
 * Parse a primary key condition into the primary key columns.
 *
 * @param conn the database connection
 * @param key the primary key condition as a string
 * @return an array containing the column name list and the data list
 */
protected static Object[][] parseKey(Connection conn, String key) {
    ArrayList<String> columns = New.arrayList();
    ArrayList<String> data = New.arrayList();
    JdbcConnection c = (JdbcConnection) conn;
    Session session = (Session) c.getSession();
    Parser p = new Parser(session);
    Expression expr = p.parseExpression(key);
    addColumnData(columns, data, expr);
    Object[] col = new Object[columns.size()];
    columns.toArray(col);
    Object[] dat = new Object[columns.size()];
    data.toArray(dat);
    Object[][] columnData = { col, dat };
    return columnData;
}

Example 53 with Expression

use of de.neemann.digital.hdl.model2.expression.Expression in project ignite by apache.

the class DmlAstUtils method elementOrDefault.

/**
 * Do what we can to compute default value for this column (mimics H2 behavior).
 * @see Table#getDefaultValue
 * @see Column#validateConvertUpdateSequence
 * @param el SQL element.
 * @param col Column.
 * @return {@link GridSqlConst#NULL}, if {@code el} is null, or {@code el} if
 * it's not {@link GridSqlKeyword#DEFAULT}, or computed default value.
 */
private static GridSqlElement elementOrDefault(GridSqlElement el, GridSqlColumn col) {
    if (el == null)
        return GridSqlConst.NULL;
    if (el != GridSqlKeyword.DEFAULT)
        return el;
    Column h2Col = col.column();
    Expression dfltExpr = h2Col.getDefaultExpression();
    Value dfltVal;
    try {
        dfltVal = dfltExpr != null ? dfltExpr.getValue(null) : null;
    } catch (Exception ignored) {
        throw new IgniteSQLException("Failed to evaluate default value for a column " + col.columnName());
    }
    if (dfltVal != null)
        return new GridSqlConst(dfltVal);
    int type = h2Col.getType();
    DataType dt = DataType.getDataType(type);
    if (dt.decimal)
        dfltVal = ValueInt.get(0).convertTo(type);
    else if (dt.type == Value.TIMESTAMP)
        dfltVal = ValueTimestamp.fromMillis(U.currentTimeMillis());
    else if (dt.type == Value.TIME)
        dfltVal = ValueTime.fromNanos(0);
    else if (dt.type == Value.DATE)
        dfltVal = ValueDate.fromMillis(U.currentTimeMillis());
    else
        dfltVal = ValueString.get("").convertTo(type);
    return new GridSqlConst(dfltVal);
}

Example 54 with Expression

use of de.neemann.digital.hdl.model2.expression.Expression in project ignite by apache.

the class GridSqlQueryParser method parseInsert.

/**
 * @param insert Insert.
 * @see <a href="http://h2database.com/html/grammar.html#insert">H2 insert spec</a>
 */
private GridSqlInsert parseInsert(Insert insert) {
    GridSqlInsert res = (GridSqlInsert) h2ObjToGridObj.get(insert);
    if (res != null)
        return res;
    res = new GridSqlInsert();
    h2ObjToGridObj.put(insert, res);
    Table srcTbl = INSERT_TABLE.get(insert);
    GridSqlElement tbl = parseTable(srcTbl);
    res.into(tbl).direct(INSERT_DIRECT.get(insert)).sorted(INSERT_SORTED.get(insert));
    Column[] srcCols = INSERT_COLUMNS.get(insert);
    GridSqlColumn[] cols = new GridSqlColumn[srcCols.length];
    for (int i = 0; i < srcCols.length; i++) {
        cols[i] = new GridSqlColumn(srcCols[i], tbl, null, null, srcCols[i].getName());
        cols[i].resultType(fromColumn(srcCols[i]));
    }
    res.columns(cols);
    List<Expression[]> srcRows = INSERT_ROWS.get(insert);
    if (!srcRows.isEmpty()) {
        List<GridSqlElement[]> rows = new ArrayList<>(srcRows.size());
        for (Expression[] srcRow : srcRows) {
            GridSqlElement[] row = new GridSqlElement[srcRow.length];
            for (int i = 0; i < srcRow.length; i++) {
                row[i] = parseExpression(srcRow[i], false);
                if (row[i] == null) {
                    throw new IgniteSQLException("Explicit DEFAULT values are unsupported for INSERT.", IgniteQueryErrorCode.UNSUPPORTED_OPERATION);
                }
            }
            rows.add(row);
        }
        res.rows(rows);
    } else {
        res.rows(Collections.<GridSqlElement[]>emptyList());
        res.query(parseQuery(INSERT_QUERY.get(insert)));
    }
    return res;
}

Example 55 with Expression

use of de.neemann.digital.hdl.model2.expression.Expression in project ignite by apache.

the class DmlAstUtils method elementOrDefault.

/**
     * Do what we can to compute default value for this column (mimics H2 behavior).
     * @see Table#getDefaultValue
     * @see Column#validateConvertUpdateSequence
     * @param el SQL element.
     * @param col Column.
     * @return {@link GridSqlConst#NULL}, if {@code el} is null, or {@code el} if
     * it's not {@link GridSqlKeyword#DEFAULT}, or computed default value.
     */
private static GridSqlElement elementOrDefault(GridSqlElement el, GridSqlColumn col) {
    if (el == null)
        return GridSqlConst.NULL;
    if (el != GridSqlKeyword.DEFAULT)
        return el;
    Column h2Col = col.column();
    Expression dfltExpr = h2Col.getDefaultExpression();
    Value dfltVal;
    try {
        dfltVal = dfltExpr != null ? dfltExpr.getValue(null) : null;
    } catch (Exception ignored) {
        throw new IgniteSQLException("Failed to evaluate default value for a column " + col.columnName());
    }
    if (dfltVal != null)
        return new GridSqlConst(dfltVal);
    int type = h2Col.getType();
    DataType dt = DataType.getDataType(type);
    if (dt.decimal)
        dfltVal = ValueInt.get(0).convertTo(type);
    else if (dt.type == Value.TIMESTAMP)
        dfltVal = ValueTimestamp.fromMillis(U.currentTimeMillis());
    else if (dt.type == Value.TIME)
        dfltVal = ValueTime.fromNanos(0);
    else if (dt.type == Value.DATE)
        dfltVal = ValueDate.fromMillis(U.currentTimeMillis());
    else
        dfltVal = ValueString.get("").convertTo(type);
    return new GridSqlConst(dfltVal);
}