Examples with Value com.wplatform.ddal.value.Value used on opensource projects

Example 51 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class SimpleRow method toString.

@Override
public String toString() {
    StatementBuilder buff = new StatementBuilder("( /* key:");
    buff.append(getKey());
    if (version != 0) {
        buff.append(" v:" + version);
    }
    buff.append(" */ ");
    for (Value v : data) {
        buff.appendExceptFirst(", ");
        buff.append(v == null ? "null" : v.getTraceSQL());
    }
    return buff.append(')').toString();
}

Example 52 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class ValueHashMap method rehash.

@Override
protected void rehash(int newLevel) {
    Value[] oldKeys = keys;
    V[] oldValues = values;
    reset(newLevel);
    int len = oldKeys.length;
    for (int i = 0; i < len; i++) {
        Value k = oldKeys[i];
        if (k != null && k != ValueNull.DELETED) {
            // skip the checkSizePut so we don't end up
            // accidentally recursing
            internalPut(k, oldValues[i]);
        }
    }
}

Example 53 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class ValueHashMap method internalPut.

private void internalPut(Value key, V value) {
    int index = getIndex(key);
    int plus = 1;
    int deleted = -1;
    do {
        Value k = keys[index];
        if (k == null) {
            // found an empty record
            if (deleted >= 0) {
                index = deleted;
                deletedCount--;
            }
            size++;
            keys[index] = key;
            values[index] = value;
            return;
        } else if (k == ValueNull.DELETED) {
            // found a deleted record
            if (deleted < 0) {
                deleted = index;
            }
        } else if (k.equals(key)) {
            // update existing
            values[index] = value;
            return;
        }
        index = (index + plus++) & mask;
    } while (plus <= len);
    // no space
    DbException.throwInternalError("hashmap is full");
}

Example 54 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class UpdatableRow method setKey.

private void setKey(PreparedStatement prep, int start, Value[] current) throws SQLException {
    for (int i = 0, size = key.size(); i < size; i++) {
        String col = key.get(i);
        int idx = getColumnIndex(col);
        Value v = current[idx];
        if (v == null || v == ValueNull.INSTANCE) {
            // as multiple such rows could exist
            throw DbException.get(ErrorCode.NO_DATA_AVAILABLE);
        }
        v.set(prep, start + i);
    }
}

Example 55 with Value

use of com.wplatform.ddal.value.Value in project jdbc-shards by wplatform.

the class JdbcQueryWorker method doWork.

@Override
public ResultSet doWork() {
    Connection conn = null;
    PreparedStatement stmt = null;
    try {
        DataSource dataSource = getDataSource();
        Optional optional = Optional.build().shardName(shardName).readOnly(true);
        if (trace.isDebugEnabled()) {
            trace.debug("{0} Fetching connection from DataSource.", shardName);
        }
        conn = session.applyConnection(dataSource, optional);
        attach(conn);
        if (trace.isDebugEnabled()) {
            trace.debug("{0} Preparing: {};", shardName, sql);
        }
        stmt = conn.prepareStatement(sql);
        attach(stmt);
        applyQueryTimeout(stmt);
        applyMaxRows(stmt);
        if (params != null) {
            for (int i = 0, size = params.size(); i < size; i++) {
                Value v = params.get(i);
                v.set(stmt, i + 1);
                if (trace.isDebugEnabled()) {
                    trace.debug("{0} setParameter: {1} -> {2};", shardName, i + 1, v.getSQL());
                }
            }
        }
        ResultSet result = stmt.executeQuery();
        attach(result);
        return result;
    } catch (SQLException e) {
        StatementBuilder buff = new StatementBuilder();
        buff.append(shardName).append(" executing executeQuery error:").append(sql);
        if (params != null && params.size() > 0) {
            buff.append("\n{");
            int i = 1;
            for (Value v : params) {
                buff.appendExceptFirst(", ");
                buff.append(i++).append(": ").append(v.getSQL());
            }
            buff.append('}');
        }
        buff.append(';');
        trace.error(e, buff.toString());
        throw wrapException(sql, e);
    }
}