| /* |
| |
| Derby - Class org.apache.derby.iapi.types.SQLReal |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| |
| package org.apache.derby.iapi.types; |
| |
| import org.apache.derby.iapi.reference.SQLState; |
| |
| import org.apache.derby.iapi.services.io.Storable; |
| import org.apache.derby.iapi.services.io.StoredFormatIds; |
| |
| import org.apache.derby.iapi.error.StandardException; |
| |
| import org.apache.derby.shared.common.sanity.SanityManager; |
| |
| import org.apache.derby.iapi.services.cache.ClassSize; |
| |
| import java.io.ObjectOutput; |
| import java.io.ObjectInput; |
| import java.io.IOException; |
| |
| import java.math.BigDecimal; |
| import java.sql.ResultSet; |
| import java.sql.PreparedStatement; |
| import java.sql.SQLException; |
| |
| /** |
| * SQLReal satisfies the DataValueDescriptor |
| * interfaces (i.e., OrderableDataType). It implements a real column, |
| * e.g. for storing a column value; it can be specified |
| * when constructed to not allow nulls. Nullability cannot be changed |
| * after construction, as it affects the storage size and mechanism. |
| * <p> |
| * Because OrderableDataType is a subtype of ValueColumn, |
| * SQLReal can play a role in either a ValueColumn/Row |
| * or a OrderableDataType/Row, interchangeably. |
| * <p> |
| * We assume the store has a flag for nullness of the value, |
| * and simply return a 0-length array for the stored form |
| * when the value is null. |
| * <p> |
| * PERFORMANCE: There are likely alot of performance improvements |
| * possible for this implementation -- it new's Float |
| * more than it probably wants to. |
| * <p> |
| * This is called SQLReal even though it maps to the Java float type, |
| * to avoid confusion with whether it maps to the SQL float type or not. |
| * It doesn't, it maps to the SQL real type. |
| * <p> |
| * This is modeled after SQLSmallint. |
| * @see SQLSmallint |
| * |
| */ |
| public final class SQLReal |
| extends NumberDataType |
| { |
| |
| /* |
| * DataValueDescriptor interface |
| * (mostly implemented in DataType) |
| */ |
| |
| |
| // JDBC is lax in what it permits and what it |
| // returns, so we are similarly lax |
| |
| /** |
| * @see DataValueDescriptor#getInt |
| * @exception StandardException thrown on failure to convert |
| */ |
| public int getInt() throws StandardException |
| { |
| if ((value > (((double) Integer.MAX_VALUE + 1.0d))) || (value < (((double) Integer.MIN_VALUE) - 1.0d))) |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "INTEGER"); |
| return (int) value; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getByte |
| * @exception StandardException thrown on failure to convert |
| */ |
| public byte getByte() throws StandardException |
| { |
| if ((value > (((double) Byte.MAX_VALUE + 1.0d))) || (value < (((double) Byte.MIN_VALUE) - 1.0d))) |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "TINYINT"); |
| return (byte) value; |
| } |
| |
| /** |
| * @exception StandardException thrown on failure to convert |
| * @see DataValueDescriptor#getShort |
| */ |
| public short getShort() throws StandardException |
| { |
| if ((value > (((double) Short.MAX_VALUE + 1.0d))) || (value < (((double) Short.MIN_VALUE) - 1.0d))) |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "SMALLINT"); |
| return (short) value; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getLong |
| * @exception StandardException thrown on failure to convert |
| */ |
| public long getLong() throws StandardException |
| { |
| if ((value > (((double) Long.MAX_VALUE + 1.0d))) || (value < (((double) Long.MIN_VALUE) - 1.0d))) |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, "BIGINT"); |
| return (long) value; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getFloat |
| */ |
| public float getFloat() |
| { |
| return value; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getDouble |
| */ |
| public double getDouble() |
| { |
| return (double) value; |
| } |
| |
| /** |
| * DOUBLE implementation. Convert to a BigDecimal using getString. |
| */ |
| public int typeToBigDecimal() |
| { |
| return java.sql.Types.CHAR; |
| } |
| // for lack of a specification: 0 or null is false, |
| // all else is true |
| /** |
| * @see DataValueDescriptor#getBoolean |
| */ |
| public boolean getBoolean() |
| { |
| return (value != 0); |
| } |
| |
| /** |
| * @see DataValueDescriptor#getString |
| */ |
| public String getString() |
| { |
| if (isNull()) |
| return null; |
| else |
| return Float.toString(value); |
| } |
| |
| /** |
| * @see DataValueDescriptor#getLength |
| */ |
| public int getLength() |
| { |
| return REAL_LENGTH; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getObject |
| */ |
| public Object getObject() |
| { |
| if (isNull()) |
| return null; |
| else |
| return value; |
| } |
| |
| // this is for DataType's error generator |
| public String getTypeName() |
| { |
| return TypeId.REAL_NAME; |
| } |
| |
| /* |
| * Storable interface, implies Externalizable, TypedFormat |
| */ |
| |
| |
| /** |
| Return my format identifier. |
| |
| @see org.apache.derby.iapi.services.io.TypedFormat#getTypeFormatId |
| */ |
| public int getTypeFormatId() { |
| return StoredFormatIds.SQL_REAL_ID; |
| } |
| |
| /* |
| * see if the real value is null. |
| */ |
| /** @see Storable#isNull */ |
| public boolean isNull() |
| { |
| return isnull; |
| } |
| |
| public void writeExternal(ObjectOutput out) throws IOException { |
| |
| // never called when value is null |
| if (SanityManager.DEBUG) |
| SanityManager.ASSERT(! isNull()); |
| |
| out.writeFloat(value); |
| } |
| |
| /** @see java.io.Externalizable#readExternal */ |
| public void readExternal(ObjectInput in) throws IOException { |
| // setValue(in.readFloat()); // can throw StandardException which we can't pass on |
| // assume we wrote the value, so we can read it without problem, for now. |
| value = in.readFloat(); |
| isnull = false; |
| } |
| |
| /** |
| * @see Storable#restoreToNull |
| * |
| */ |
| public void restoreToNull() |
| { |
| value = 0; |
| isnull = true; |
| } |
| |
| |
| /** @exception StandardException Thrown on error */ |
| protected int typeCompare(DataValueDescriptor arg) throws StandardException |
| { |
| /* neither are null, get the value */ |
| |
| // jsk: should use double? depends on DB2 |
| float thisValue = this.getFloat(); |
| float otherValue = NumberDataType.normalizeREAL(arg.getFloat()); // could gotten from "any type", may not be a float |
| |
| if (thisValue == otherValue) |
| return 0; |
| else if (thisValue > otherValue) |
| return 1; |
| else |
| return -1; |
| } |
| |
| /* |
| * DataValueDescriptor interface |
| */ |
| |
| /** @see DataValueDescriptor#cloneValue */ |
| public DataValueDescriptor cloneValue(boolean forceMaterialization) |
| { |
| SQLReal ret = new SQLReal(); |
| ret.value = this.value; |
| ret.isnull = this.isnull; |
| return ret; |
| } |
| |
| /** |
| * @see DataValueDescriptor#getNewNull |
| */ |
| public DataValueDescriptor getNewNull() |
| { |
| return new SQLReal(); |
| } |
| |
| /** |
| * @see DataValueDescriptor#setValueFromResultSet |
| * |
| * @exception StandardException Thrown on error |
| * @exception SQLException Thrown on error |
| */ |
| public void setValueFromResultSet(ResultSet resultSet, int colNumber, |
| boolean isNullable) |
| throws StandardException, SQLException |
| { |
| float fv = resultSet.getFloat(colNumber); |
| if (isNullable && resultSet.wasNull()) |
| restoreToNull(); |
| else |
| setValue(fv); |
| } |
| /** |
| Set the value into a PreparedStatement. |
| |
| @exception SQLException Error setting value in PreparedStatement |
| */ |
| public final void setInto(PreparedStatement ps, int position) throws SQLException { |
| |
| if (isNull()) { |
| ps.setNull(position, java.sql.Types.REAL); |
| return; |
| } |
| |
| ps.setFloat(position, value); |
| } |
| /** |
| Set this value into a ResultSet for a subsequent ResultSet.insertRow |
| or ResultSet.updateRow. This method will only be called for non-null values. |
| |
| @exception SQLException thrown by the ResultSet object |
| @exception StandardException thrown by me accessing my value. |
| */ |
| public final void setInto(ResultSet rs, int position) throws SQLException, StandardException { |
| rs.updateFloat(position, value); |
| } |
| |
| /* |
| * class interface |
| */ |
| |
| /* |
| * constructors |
| */ |
| |
| /** no-arg constructor, required by Formattable. */ |
| // This constructor also gets used when we are |
| // allocating space for a float. |
| public SQLReal() |
| { |
| isnull = true; |
| } |
| |
| public SQLReal(float val) |
| throws StandardException |
| { |
| value = NumberDataType.normalizeREAL(val); |
| } |
| public SQLReal(Float obj) throws StandardException { |
| if (isnull = (obj == null)) |
| ; |
| else { |
| value = NumberDataType.normalizeREAL(obj.floatValue()); |
| } |
| } |
| |
| /** |
| @exception StandardException thrown if string not accepted |
| */ |
| public void setValue(String theValue) |
| throws StandardException |
| { |
| if (theValue == null) |
| { |
| value = 0; |
| isnull = true; |
| } |
| else |
| { |
| // what if String is rouned to zero? |
| //System.out.println("SQLReal.setValue(String) - rounding issue?"+theValue); |
| try { |
| setValue(Double.parseDouble(theValue.trim())); |
| } catch (NumberFormatException nfe) { |
| throw invalidFormat(); |
| } |
| } |
| } |
| |
| public void setValue(Number theValue) throws StandardException |
| { |
| if (objectNull(theValue)) |
| return; |
| |
| if (SanityManager.ASSERT) |
| { |
| if (!(theValue instanceof java.lang.Float)) |
| SanityManager.THROWASSERT("SQLReal.setValue(Number) passed a " + theValue.getClass()); |
| } |
| |
| setValue(theValue.floatValue()); |
| } |
| /** |
| Called for an application setting this value using a BigDecimal |
| */ |
| public void setBigDecimal(BigDecimal bigDecimal) throws StandardException |
| { |
| if (objectNull(bigDecimal)) |
| return; |
| |
| // Note BigDecimal.floatValue() handles the case where |
| // its value is outside the range of a float. It returns |
| // infinity values which should throw an exception in setValue(float). |
| |
| float v = bigDecimal.floatValue(); |
| |
| if (v == 0) { |
| // We need to catch underflow here, since BigDecimal#floatValue it |
| // just returns 0 (i.e. no exception). |
| boolean isZero = bigDecimal.compareTo(BigDecimal.ZERO) == 0; |
| |
| if (!isZero) { |
| throw StandardException. |
| newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, |
| TypeId.REAL_NAME); |
| } |
| } |
| |
| setValue(v); |
| |
| } |
| |
| public void setValue(float theValue) |
| throws StandardException |
| { |
| value = NumberDataType.normalizeREAL(theValue); |
| isnull = false; |
| } |
| |
| public void setValue(int theValue) |
| { |
| value = theValue; |
| isnull = false; |
| |
| } |
| |
| public void setValue(long theValue) |
| { |
| value = theValue; |
| isnull = false; |
| |
| } |
| |
| /** |
| @exception StandardException if outsideRangeForReal |
| */ |
| public void setValue(double theValue) throws StandardException |
| { |
| // jsk: where does this theValue come from? if some caller is rounding parsing from string |
| // we might have rounding error (different than DB2 behaviour) |
| float fv = (float) theValue; |
| // detect rounding taking place at cast time |
| if (fv == 0.0f && theValue != 0.0d) { |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, TypeId.REAL_NAME); |
| } |
| setValue(fv); |
| } |
| |
| /** |
| * @see NumberDataValue#setValue |
| * |
| */ |
| public void setValue(boolean theValue) |
| { |
| value = theValue?1:0; |
| isnull = false; |
| } |
| |
| /** |
| * Set the value from a correctly typed Float object. |
| * @throws StandardException |
| */ |
| void setObject(Object theValue) throws StandardException |
| { |
| setValue(((Float) theValue).floatValue()); |
| } |
| |
| protected void setFrom(DataValueDescriptor theValue) throws StandardException { |
| |
| // rounding issue to solve!!!/jsk |
| //DOUBLE.getFloat() would make rounding problem if it got called here!!! |
| // need to check where it is called from! |
| if (theValue instanceof StringDataValue) { |
| //System.out.println("\tcalling setValue(string)"); |
| setValue(theValue.getString()); |
| } else if (theValue instanceof SQLDouble) { |
| //System.out.println("\tcalling setValue(double)"); |
| setValue(theValue.getDouble()); |
| } else { |
| setValue(theValue.getFloat()); |
| } |
| } |
| |
| |
| /* |
| * DataValueDescriptor interface |
| */ |
| |
| /** @see DataValueDescriptor#typePrecedence */ |
| public int typePrecedence() |
| { |
| return TypeId.REAL_PRECEDENCE; |
| } |
| |
| |
| /* |
| ** SQL Operators |
| */ |
| |
| /** |
| * The = operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the = |
| * @param right The value on the right side of the = |
| * |
| * @return A SQL boolean value telling whether the two parameters are equal |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue equals(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() == right.getFloat()); |
| } |
| |
| /** |
| * The <> operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the operator |
| * @param right The value on the right side of the operator |
| * |
| * @return A SQL boolean value telling whether the two parameters |
| * are not equal |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue notEquals(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() != right.getFloat()); |
| } |
| |
| /** |
| * The < operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the operator |
| * @param right The value on the right side of the operator |
| * |
| * @return A SQL boolean value telling whether the first operand is less |
| * than the second operand |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue lessThan(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() < right.getFloat()); |
| } |
| |
| /** |
| * The > operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the operator |
| * @param right The value on the right side of the operator |
| * |
| * @return A SQL boolean value telling whether the first operand is greater |
| * than the second operand |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue greaterThan(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() > right.getFloat()); |
| } |
| |
| /** |
| * The <= operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the operator |
| * @param right The value on the right side of the operator |
| * |
| * @return A SQL boolean value telling whether the first operand is less |
| * than or equal to the second operand |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue lessOrEquals(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() <= right.getFloat()); |
| } |
| |
| /** |
| * The >= operator as called from the language module, as opposed to |
| * the storage module. |
| * |
| * @param left The value on the left side of the operator |
| * @param right The value on the right side of the operator |
| * |
| * @return A SQL boolean value telling whether the first operand is greater |
| * than or equal to the second operand |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public BooleanDataValue greaterOrEquals(DataValueDescriptor left, |
| DataValueDescriptor right) |
| throws StandardException |
| { |
| return SQLBoolean.truthValue(left, |
| right, |
| left.getFloat() >= right.getFloat()); |
| } |
| |
| |
| /** |
| * This method implements the + operator for "real + real". |
| * The operator uses DOUBLE aritmetic as DB2 does. |
| * |
| * @param addend1 One of the addends |
| * @param addend2 The other addend |
| * @param result The result of a previous call to this method, null |
| * if not called yet |
| * |
| * @return A SQLReal containing the result of the addition |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public NumberDataValue plus(NumberDataValue addend1, |
| NumberDataValue addend2, |
| NumberDataValue result) |
| throws StandardException |
| { |
| if (result == null) |
| { |
| result = new SQLReal(); |
| } |
| |
| if (addend1.isNull() || addend2.isNull()) |
| { |
| result.setToNull(); |
| return result; |
| } |
| |
| double dsum = addend1.getDouble() + addend2.getDouble(); |
| // No need to check underflow (result rounded to 0.0), |
| // since the difference between two non-equal valid DB2 DOUBLE values is always non-zero in java.lang.Double precision. |
| result.setValue(dsum); |
| |
| return result; |
| } |
| |
| /** |
| * This method implements the - operator for "real - real". |
| * The operator uses DOUBLE aritmetic as DB2 does. |
| * |
| * @param left The value to be subtracted from |
| * @param right The value to be subtracted |
| * @param result The result of a previous call to this method, null |
| * if not called yet |
| * |
| * @return A SQLReal containing the result of the subtraction |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public NumberDataValue minus(NumberDataValue left, |
| NumberDataValue right, |
| NumberDataValue result) |
| throws StandardException |
| { |
| if (result == null) |
| { |
| result = new SQLReal(); |
| } |
| |
| if (left.isNull() || right.isNull()) |
| { |
| result.setToNull(); |
| return result; |
| } |
| |
| double ddifference = left.getDouble() - right.getDouble(); |
| // No need to check underflow (result rounded to 0.0), |
| // since no difference between two valid DB2 DOUBLE values can be rounded off to 0.0 in java.lang.Double |
| result.setValue(ddifference); |
| return result; |
| } |
| |
| /** |
| * This method implements the * operator for "real * real". |
| * The operator uses DOUBLE aritmetic as DB2 does. |
| * |
| * @param left The first value to be multiplied |
| * @param right The second value to be multiplied |
| * @param result The result of a previous call to this method, null |
| * if not called yet |
| * |
| * @return A SQLReal containing the result of the multiplication |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public NumberDataValue times(NumberDataValue left, |
| NumberDataValue right, |
| NumberDataValue result) |
| throws StandardException |
| { |
| if (result == null) |
| { |
| result = new SQLReal(); |
| } |
| |
| if (left.isNull() || right.isNull()) |
| { |
| result.setToNull(); |
| return result; |
| } |
| |
| double leftValue = left.getDouble(); |
| double rightValue = right.getDouble(); |
| double tempResult = leftValue * rightValue; |
| // check underflow (result rounded to 0.0) |
| if ( (tempResult == 0.0) && ( (leftValue != 0.0) && (rightValue != 0.0) ) ) { |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, TypeId.REAL_NAME); |
| } |
| |
| result.setValue(tempResult); |
| return result; |
| } |
| |
| /** |
| * This method implements the / operator for "real / real". |
| * The operator uses DOUBLE aritmetic as DB2 does. |
| * |
| * @param dividend The numerator |
| * @param divisor The denominator |
| * @param result The result of a previous call to this method, null |
| * if not called yet |
| * |
| * @return A SQLReal containing the result of the division |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public NumberDataValue divide(NumberDataValue dividend, |
| NumberDataValue divisor, |
| NumberDataValue result) |
| throws StandardException |
| { |
| if (result == null) |
| { |
| result = new SQLReal(); |
| } |
| |
| if (dividend.isNull() || divisor.isNull()) |
| { |
| result.setToNull(); |
| return result; |
| } |
| |
| double divisorValue = divisor.getDouble(); |
| if (divisorValue == 0.0e0f) |
| { |
| throw StandardException.newException(SQLState.LANG_DIVIDE_BY_ZERO); |
| } |
| |
| double dividendValue = dividend.getDouble(); |
| double resultValue = dividendValue / divisorValue; |
| if (Double.isNaN(resultValue)) |
| { |
| throw StandardException.newException(SQLState.LANG_DIVIDE_BY_ZERO); |
| } |
| |
| // check underflow (result rounded to 0.0) |
| if ((resultValue == 0.0e0d) && (dividendValue != 0.0e0d)) { |
| throw StandardException.newException(SQLState.LANG_OUTSIDE_RANGE_FOR_DATATYPE, TypeId.REAL_NAME); |
| } |
| |
| result.setValue(resultValue); |
| return result; |
| } |
| |
| /** |
| * This method implements the unary minus operator for real. |
| * |
| * @param result The result of a previous call to this method, null |
| * if not called yet |
| * |
| * @return A SQLSmalllint containing the result of the division |
| * |
| * @exception StandardException Thrown on error |
| */ |
| |
| public NumberDataValue minus(NumberDataValue result) |
| throws StandardException |
| { |
| float minusResult; |
| |
| if (result == null) |
| { |
| result = new SQLReal(); |
| } |
| |
| if (this.isNull()) |
| { |
| result.setToNull(); |
| return result; |
| } |
| |
| minusResult = -(this.getFloat()); |
| result.setValue(minusResult); |
| return result; |
| } |
| |
| /** |
| * This method implements the isNegative method. |
| * Note: This method will return true for -0.0f. |
| * |
| * @return A boolean. If this.value is negative, return true. |
| * For positive values or null, return false. |
| */ |
| |
| protected boolean isNegative() |
| { |
| return !isNull() && (value < 0.0f); |
| } |
| |
| /* |
| * String display of value |
| */ |
| |
| public String toString() |
| { |
| if (isNull()) |
| return "NULL"; |
| else |
| return Float.toString(value); |
| } |
| |
| /* |
| * Hash code |
| */ |
| public int hashCode() |
| { |
| long longVal = (long) value; |
| |
| if (longVal != value) |
| { |
| longVal = Double.doubleToLongBits(value); |
| } |
| |
| return (int) (longVal ^ (longVal >> 32)); |
| } |
| |
| static final int REAL_LENGTH = 16; |
| |
| private static final int BASE_MEMORY_USAGE = ClassSize.estimateBaseFromCatalog( SQLReal.class); |
| |
| public int estimateMemoryUsage() |
| { |
| return BASE_MEMORY_USAGE; |
| } |
| |
| /* |
| * object state |
| */ |
| private float value; |
| private boolean isnull; |
| |
| } |