コード例 #1
0
 @Override
 public Row getRow(Session session, long key) {
   TransactionMap<Value, Value> map = getMap(session);
   Value v = map.get(ValueLong.get(key));
   ValueArray array = (ValueArray) v;
   Row row = new Row(array.getList(), 0);
   row.setKey(key);
   return row;
 }
コード例 #2
0
ファイル: TestValue.java プロジェクト: XUZHOUWANG/H2-Research
  private void testCastTrim() {
    Value v;
    String spaces = new String(new char[100]).replace((char) 0, ' ');

    v = ValueArray.get(new Value[] {ValueString.get("hello"), ValueString.get("world")});
    assertEquals(10, v.getPrecision());
    assertEquals(5, v.convertPrecision(5, true).getPrecision());
    v = ValueArray.get(new Value[] {ValueString.get(""), ValueString.get("")});
    assertEquals(0, v.getPrecision());
    assertEquals("('')", v.convertPrecision(1, true).toString());

    v = ValueBytes.get(spaces.getBytes());
    assertEquals(100, v.getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getBytes().length);
    assertEquals(32, v.convertPrecision(10, false).getBytes()[9]);
    assertEquals(10, v.convertPrecision(10, true).getPrecision());

    final Value vd = ValueDecimal.get(new BigDecimal("1234567890.123456789"));
    assertEquals(19, vd.getPrecision());
    assertEquals("1234567890.1234567", vd.convertPrecision(10, true).getString());
    new AssertThrows(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1) {
      @Override
      public void test() {
        vd.convertPrecision(10, false);
      }
    };

    v = ValueLobDb.createSmallLob(Value.CLOB, spaces.getBytes(), 100);
    assertEquals(100, v.getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getString().length());
    assertEquals("          ", v.convertPrecision(10, false).getString());
    assertEquals(10, v.convertPrecision(10, true).getPrecision());

    v = ValueLobDb.createSmallLob(Value.BLOB, spaces.getBytes(), 100);
    assertEquals(100, v.getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getBytes().length);
    assertEquals(32, v.convertPrecision(10, false).getBytes()[9]);
    assertEquals(10, v.convertPrecision(10, true).getPrecision());

    ResultSet rs = new SimpleResultSet();
    v = ValueResultSet.get(rs);
    assertEquals(Integer.MAX_VALUE, v.getPrecision());
    assertEquals(Integer.MAX_VALUE, v.convertPrecision(10, false).getPrecision());
    assertTrue(rs == v.convertPrecision(10, false).getObject());
    assertFalse(rs == v.convertPrecision(10, true).getObject());
    assertEquals(Integer.MAX_VALUE, v.convertPrecision(10, true).getPrecision());

    v = ValueString.get(spaces);
    assertEquals(100, v.getPrecision());
    assertEquals(10, v.convertPrecision(10, false).getPrecision());
    assertEquals("          ", v.convertPrecision(10, false).getString());
    assertEquals("          ", v.convertPrecision(10, true).getString());
  }
コード例 #3
0
 @Override
 public Row get() {
   if (row == null) {
     if (current != null) {
       ValueArray array = (ValueArray) current.getValue();
       row = session.createRow(array.getList(), 0);
       row.setKey(current.getKey().getLong());
     }
   }
   return row;
 }
コード例 #4
0
ファイル: Subquery.java プロジェクト: mengfeng/h2database
 @Override
 public Value getValue(Session session) {
   query.setSession(session);
   ResultInterface result = query.query(2);
   try {
     int rowcount = result.getRowCount();
     if (rowcount > 1) {
       throw DbException.get(ErrorCode.SCALAR_SUBQUERY_CONTAINS_MORE_THAN_ONE_ROW);
     }
     Value v;
     if (rowcount <= 0) {
       v = ValueNull.INSTANCE;
     } else {
       result.next();
       Value[] values = result.currentRow();
       if (result.getVisibleColumnCount() == 1) {
         v = values[0];
       } else {
         v = ValueArray.get(values);
       }
     }
     return v;
   } finally {
     result.close();
   }
 }
コード例 #5
0
 @Override
 public Value getValue(Session session) {
   Value[] v = new Value[list.length];
   for (int i = 0; i < list.length; i++) {
     v[i] = list[i].getValue(session);
   }
   return ValueArray.get(v);
 }
コード例 #6
0
ファイル: Session.java プロジェクト: rundoom/Netcracker
 /**
  * Partially roll back the current transaction.
  *
  * @param savepoint the savepoint to which should be rolled back
  * @param trimToSize if the list should be trimmed
  */
 public void rollbackTo(Savepoint savepoint, boolean trimToSize) {
   int index = savepoint == null ? 0 : savepoint.logIndex;
   while (undoLog.size() > index) {
     UndoLogRecord entry = undoLog.getLast();
     entry.undo(this);
     undoLog.removeLast(trimToSize);
   }
   if (transaction != null) {
     long savepointId = savepoint == null ? 0 : savepoint.transactionSavepoint;
     HashMap<String, MVTable> tableMap = database.getMvStore().getTables();
     Iterator<Change> it = transaction.getChanges(savepointId);
     while (it.hasNext()) {
       Change c = it.next();
       MVTable t = tableMap.get(c.mapName);
       if (t != null) {
         long key = ((ValueLong) c.key).getLong();
         ValueArray value = (ValueArray) c.value;
         short op;
         Row row;
         if (value == null) {
           op = UndoLogRecord.INSERT;
           row = t.getRow(this, key);
         } else {
           op = UndoLogRecord.DELETE;
           row = new Row(value.getList(), Row.MEMORY_CALCULATE);
         }
         row.setKey(key);
         UndoLogRecord log = new UndoLogRecord(t, op, row);
         log.undo(this);
       }
     }
   }
   if (savepoints != null) {
     String[] names = new String[savepoints.size()];
     savepoints.keySet().toArray(names);
     for (String name : names) {
       Savepoint sp = savepoints.get(name);
       int savepointIndex = sp.logIndex;
       if (savepointIndex > index) {
         savepoints.remove(name);
       }
     }
   }
 }
コード例 #7
0
  @Override
  public void add(Session session, Row row) {
    if (mainIndexColumn == -1) {
      if (row.getKey() == 0) {
        row.setKey(++lastKey);
      }
    } else {
      long c = row.getValue(mainIndexColumn).getLong();
      row.setKey(c);
    }

    if (mvTable.getContainsLargeObject()) {
      for (int i = 0, len = row.getColumnCount(); i < len; i++) {
        Value v = row.getValue(i);
        Value v2 = v.link(database, getId());
        if (v2.isLinked()) {
          session.unlinkAtCommitStop(v2);
        }
        if (v != v2) {
          row.setValue(i, v2);
        }
      }
    }

    TransactionMap<Value, Value> map = getMap(session);
    Value key = ValueLong.get(row.getKey());
    Value old = map.getLatest(key);
    if (old != null) {
      String sql = "PRIMARY KEY ON " + table.getSQL();
      if (mainIndexColumn >= 0 && mainIndexColumn < indexColumns.length) {
        sql += "(" + indexColumns[mainIndexColumn].getSQL() + ")";
      }
      DbException e = DbException.get(ErrorCode.DUPLICATE_KEY_1, sql);
      e.setSource(this);
      throw e;
    }
    try {
      map.put(key, ValueArray.get(row.getValueList()));
    } catch (IllegalStateException e) {
      throw DbException.get(ErrorCode.CONCURRENT_UPDATE_1, table.getName());
    }
    lastKey = Math.max(lastKey, row.getKey());
  }
コード例 #8
0
 private void queryGroup(int columnCount, LocalResult result) {
   ValueHashMap<HashMap<Expression, Object>> groups = ValueHashMap.newInstance();
   int rowNumber = 0;
   setCurrentRowNumber(0);
   ValueArray defaultGroup = ValueArray.get(new Value[0]);
   while (topTableFilter.next()) {
     setCurrentRowNumber(rowNumber + 1);
     if (condition == null || Boolean.TRUE.equals(condition.getBooleanValue(session))) {
       Value key;
       rowNumber++;
       if (groupIndex == null) {
         key = defaultGroup;
       } else {
         Value[] keyValues = new Value[groupIndex.length];
         // update group
         for (int i = 0; i < groupIndex.length; i++) {
           int idx = groupIndex[i];
           Expression expr = expressions.get(idx);
           keyValues[i] = expr.getValue(session);
         }
         key = ValueArray.get(keyValues);
       }
       HashMap<Expression, Object> values = groups.get(key);
       if (values == null) {
         values = new HashMap<Expression, Object>();
         groups.put(key, values);
       }
       currentGroup = values;
       currentGroupRowId++;
       int len = columnCount;
       for (int i = 0; i < len; i++) {
         if (groupByExpression == null || !groupByExpression[i]) {
           Expression expr = expressions.get(i);
           expr.updateAggregate(session);
         }
       }
       if (sampleSize > 0 && rowNumber >= sampleSize) {
         break;
       }
     }
   }
   if (groupIndex == null && groups.size() == 0) {
     groups.put(defaultGroup, new HashMap<Expression, Object>());
   }
   ArrayList<Value> keys = groups.keys();
   for (Value v : keys) {
     ValueArray key = (ValueArray) v;
     currentGroup = groups.get(key);
     Value[] keyValues = key.getList();
     Value[] row = new Value[columnCount];
     for (int j = 0; groupIndex != null && j < groupIndex.length; j++) {
       row[groupIndex[j]] = keyValues[j];
     }
     for (int j = 0; j < columnCount; j++) {
       if (groupByExpression != null && groupByExpression[j]) {
         continue;
       }
       Expression expr = expressions.get(j);
       row[j] = expr.getValue(session);
     }
     if (isHavingNullOrFalse(row)) {
       continue;
     }
     row = keepOnlyDistinct(row, columnCount);
     result.addRow(row);
   }
 }
コード例 #9
0
ファイル: Data.java プロジェクト: Blaise170/ChargingHorses
 /**
  * Read a value.
  *
  * @return the value
  */
 public Value readValue() {
   int type = data[pos++] & 255;
   switch (type) {
     case Value.NULL:
       return ValueNull.INSTANCE;
     case BOOLEAN_TRUE:
       return ValueBoolean.get(true);
     case BOOLEAN_FALSE:
       return ValueBoolean.get(false);
     case INT_NEG:
       return ValueInt.get(-readVarInt());
     case Value.INT:
       return ValueInt.get(readVarInt());
     case LONG_NEG:
       return ValueLong.get(-readVarLong());
     case Value.LONG:
       return ValueLong.get(readVarLong());
     case Value.BYTE:
       return ValueByte.get(readByte());
     case Value.SHORT:
       return ValueShort.get(readShortInt());
     case DECIMAL_0_1:
       return (ValueDecimal) ValueDecimal.ZERO;
     case DECIMAL_0_1 + 1:
       return (ValueDecimal) ValueDecimal.ONE;
     case DECIMAL_SMALL_0:
       return ValueDecimal.get(BigDecimal.valueOf(readVarLong()));
     case DECIMAL_SMALL:
       {
         int scale = readVarInt();
         return ValueDecimal.get(BigDecimal.valueOf(readVarLong(), scale));
       }
     case Value.DECIMAL:
       {
         int scale = readVarInt();
         int len = readVarInt();
         byte[] buff = DataUtils.newBytes(len);
         read(buff, 0, len);
         BigInteger b = new BigInteger(buff);
         return ValueDecimal.get(new BigDecimal(b, scale));
       }
     case LOCAL_DATE:
       {
         return ValueDate.fromDateValue(readVarLong());
       }
     case Value.DATE:
       {
         long x = readVarLong() * MILLIS_PER_MINUTE;
         return ValueDate.get(new Date(DateTimeUtils.getTimeUTCWithoutDst(x)));
       }
     case LOCAL_TIME:
       {
         long nanos = readVarLong() * 1000000 + readVarLong();
         return ValueTime.fromNanos(nanos);
       }
     case Value.TIME:
       // need to normalize the year, month and day
       return ValueTime.get(new Time(DateTimeUtils.getTimeUTCWithoutDst(readVarLong())));
     case LOCAL_TIMESTAMP:
       {
         long dateValue = readVarLong();
         long nanos = readVarLong() * 1000000 + readVarLong();
         return ValueTimestamp.fromDateValueAndNanos(dateValue, nanos);
       }
     case Value.TIMESTAMP:
       {
         Timestamp ts = new Timestamp(DateTimeUtils.getTimeUTCWithoutDst(readVarLong()));
         ts.setNanos(readVarInt());
         return ValueTimestamp.get(ts);
       }
     case Value.BYTES:
       {
         int len = readVarInt();
         byte[] b = DataUtils.newBytes(len);
         read(b, 0, len);
         return ValueBytes.getNoCopy(b);
       }
     case Value.GEOMETRY:
       {
         int len = readVarInt();
         byte[] b = DataUtils.newBytes(len);
         read(b, 0, len);
         return ValueGeometry.get(b);
       }
     case Value.JAVA_OBJECT:
       {
         int len = readVarInt();
         byte[] b = DataUtils.newBytes(len);
         read(b, 0, len);
         return ValueJavaObject.getNoCopy(null, b, handler);
       }
     case Value.UUID:
       return ValueUuid.get(readLong(), readLong());
     case Value.STRING:
       return ValueString.get(readString());
     case Value.STRING_IGNORECASE:
       return ValueStringIgnoreCase.get(readString());
     case Value.STRING_FIXED:
       return ValueStringFixed.get(readString());
     case FLOAT_0_1:
       return ValueFloat.get(0);
     case FLOAT_0_1 + 1:
       return ValueFloat.get(1);
     case DOUBLE_0_1:
       return ValueDouble.get(0);
     case DOUBLE_0_1 + 1:
       return ValueDouble.get(1);
     case Value.DOUBLE:
       return ValueDouble.get(Double.longBitsToDouble(Long.reverse(readVarLong())));
     case Value.FLOAT:
       return ValueFloat.get(Float.intBitsToFloat(Integer.reverse(readVarInt())));
     case Value.BLOB:
     case Value.CLOB:
       {
         int smallLen = readVarInt();
         if (smallLen >= 0) {
           byte[] small = DataUtils.newBytes(smallLen);
           read(small, 0, smallLen);
           return ValueLobDb.createSmallLob(type, small);
         } else if (smallLen == -3) {
           int tableId = readVarInt();
           long lobId = readVarLong();
           long precision = readVarLong();
           ValueLobDb lob = ValueLobDb.create(type, handler, tableId, lobId, null, precision);
           return lob;
         } else {
           int tableId = readVarInt();
           int objectId = readVarInt();
           long precision = 0;
           boolean compression = false;
           // -1: regular; -2: regular, but not linked (in this case:
           // including file name)
           if (smallLen == -1 || smallLen == -2) {
             precision = readVarLong();
             compression = readByte() == 1;
           }
           if (smallLen == -2) {
             String filename = readString();
             return ValueLob.openUnlinked(
                 type, handler, tableId, objectId, precision, compression, filename);
           }
           return ValueLob.openLinked(type, handler, tableId, objectId, precision, compression);
         }
       }
     case Value.ARRAY:
       {
         int len = readVarInt();
         Value[] list = new Value[len];
         for (int i = 0; i < len; i++) {
           list[i] = readValue();
         }
         return ValueArray.get(list);
       }
     case Value.RESULT_SET:
       {
         SimpleResultSet rs = new SimpleResultSet();
         rs.setAutoClose(false);
         int columns = readVarInt();
         for (int i = 0; i < columns; i++) {
           rs.addColumn(readString(), readVarInt(), readVarInt(), readVarInt());
         }
         while (true) {
           if (readByte() == 0) {
             break;
           }
           Object[] o = new Object[columns];
           for (int i = 0; i < columns; i++) {
             o[i] = readValue().getObject();
           }
           rs.addRow(o);
         }
         return ValueResultSet.get(rs);
       }
     default:
       if (type >= INT_0_15 && type < INT_0_15 + 16) {
         return ValueInt.get(type - INT_0_15);
       } else if (type >= LONG_0_7 && type < LONG_0_7 + 8) {
         return ValueLong.get(type - LONG_0_7);
       } else if (type >= BYTES_0_31 && type < BYTES_0_31 + 32) {
         int len = type - BYTES_0_31;
         byte[] b = DataUtils.newBytes(len);
         read(b, 0, len);
         return ValueBytes.getNoCopy(b);
       } else if (type >= STRING_0_31 && type < STRING_0_31 + 32) {
         return ValueString.get(readString(type - STRING_0_31));
       }
       throw DbException.get(ErrorCode.FILE_CORRUPTED_1, "type: " + type);
   }
 }