phoenix-core/src/main/java/org/apache/phoenix/schema/types/PFloat.java - phoenix - Git at Google

 /*
  * 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.phoenix.schema.types;

 import java.math.BigDecimal;
 import java.sql.Types;

 import org.apache.hadoop.hbase.util.Bytes;
 import org.apache.phoenix.schema.SortOrder;

 import com.google.common.base.Preconditions;

 public class PFloat extends PRealNumber<Float> {

   public static final PFloat INSTANCE = new PFloat();

   private PFloat() {
     super("FLOAT", Types.FLOAT, Float.class, new FloatCodec(), 6);
   }

   @Override
   public int compareTo(Object lhs, Object rhs, PDataType rhsType) {
     return PDouble.INSTANCE.compareTo(lhs, rhs, rhsType);
   }

   @Override
   public boolean isFixedWidth() {
     return true;
   }

   @Override
   public Integer getByteSize() {
     return Bytes.SIZEOF_FLOAT;
   }

   @Override
   public Integer getScale(Object o) {
     if (o == null) {
       return null;
     }
     Float v = (Float) o;
     BigDecimal bd = BigDecimal.valueOf(v);
     return bd.scale() == 0 ? null : bd.scale();
   }

   @Override
   public Integer getMaxLength(Object o) {
     if (o == null) {
       return null;
     }
     Float v = (Float) o;
     BigDecimal bd = BigDecimal.valueOf(v);
     return bd.precision();
   }

   @Override
   public byte[] toBytes(Object object) {
     byte[] b = new byte[Bytes.SIZEOF_FLOAT];
     toBytes(object, b, 0);
     return b;
   }

   @Override
   public int toBytes(Object object, byte[] bytes, int offset) {
     if (object == null) {
       throw newIllegalDataException(this + " may not be null");
     }
     return this.getCodec().encodeFloat(((Number) object).floatValue(),
         bytes, offset);
   }

   @Override
   public Object toObject(String value) {
     if (value == null || value.length() == 0) {
       return null;
     }
     try {
       return Float.parseFloat(value);
     } catch (NumberFormatException e) {
       throw newIllegalDataException(e);
     }
   }

   @Override
   public Object toObject(Object object, PDataType actualType) {
     if (object == null) {
       return null;
     }
     float f;
     if (equalsAny(actualType, PFloat.INSTANCE, PUnsignedFloat.INSTANCE)) {
       return object;
     } else if (equalsAny(actualType, PDouble.INSTANCE, PUnsignedDouble.INSTANCE)) {
       double d = (Double) object;
       if (Double.isNaN(d)
           || d == Double.POSITIVE_INFINITY
           || d == Double.NEGATIVE_INFINITY
           || (d >= -Float.MAX_VALUE && d <= Float.MAX_VALUE)) {
         return (float) d;
       } else {
         throw newIllegalDataException(
             actualType + " value " + d + " cannot be cast to Float without changing its value");
       }
     } else if (equalsAny(actualType, PLong.INSTANCE, PUnsignedLong.INSTANCE)) {
       f = (Long) object;
       return f;
     } else if (equalsAny(actualType, PInteger.INSTANCE, PUnsignedInt.INSTANCE)) {
       f = (Integer) object;
       return f;
     } else if (equalsAny(actualType, PTinyint.INSTANCE, PUnsignedTinyint.INSTANCE)) {
       f = (Byte) object;
       return f;
     } else if (equalsAny(actualType, PSmallint.INSTANCE, PUnsignedSmallint.INSTANCE)) {
       f = (Short) object;
       return f;
     } else if (actualType == PDecimal.INSTANCE) {
       BigDecimal dl = (BigDecimal) object;
       return dl.floatValue();
     }
     return throwConstraintViolationException(actualType, this);
   }

   @Override
   public Float toObject(byte[] b, int o, int l, PDataType actualType, SortOrder sortOrder,
       Integer maxLength, Integer scale) {
     if (l <= 0) {
       return null;
     }
     if (equalsAny(actualType, PFloat.INSTANCE, PUnsignedFloat.INSTANCE, PDouble.INSTANCE,
         PUnsignedDouble.INSTANCE, PLong.INSTANCE, PUnsignedLong.INSTANCE, PInteger.INSTANCE,
         PUnsignedInt.INSTANCE, PSmallint.INSTANCE, PUnsignedSmallint.INSTANCE, PTinyint.INSTANCE,
         PUnsignedTinyint.INSTANCE)) {
       return actualType.getCodec().decodeFloat(b, o, sortOrder);
     } else if (actualType == PDecimal.INSTANCE) {
       BigDecimal bd = (BigDecimal) actualType.toObject(b, o, l, actualType, sortOrder);
       return bd.floatValue();
     }

     throwConstraintViolationException(actualType, this);
     return null;
   }

   @Override
   public boolean isCoercibleTo(PDataType targetType, Object value) {
     if (value != null) {
       float f = (Float) value;
       if (targetType.equals(PUnsignedFloat.INSTANCE)) {
         return f >= 0;
       } else if (targetType.equals(PUnsignedLong.INSTANCE)) {
         return (f >= 0 && f <= Long.MAX_VALUE);
       } else if (targetType.equals(PLong.INSTANCE)) {
         return (f >= Long.MIN_VALUE && f <= Long.MAX_VALUE);
       } else if (targetType.equals(PUnsignedInt.INSTANCE)) {
         return (f >= 0 && f <= Integer.MAX_VALUE);
       } else if (targetType.equals(PInteger.INSTANCE)) {
         return (f >= Integer.MIN_VALUE && f <= Integer.MAX_VALUE);
       } else if (targetType.equals(PUnsignedSmallint.INSTANCE)) {
         return (f >= 0 && f <= Short.MAX_VALUE);
       } else if (targetType.equals(PSmallint.INSTANCE)) {
         return (f >= Short.MIN_VALUE && f <= Short.MAX_VALUE);
       } else if (targetType.equals(PTinyint.INSTANCE)) {
         return (f >= Byte.MIN_VALUE && f <= Byte.MAX_VALUE);
       } else if (targetType.equals(PUnsignedTinyint.INSTANCE)) {
         return (f >= 0 && f <= Byte.MAX_VALUE);
       }
     }
     return super.isCoercibleTo(targetType, value);
   }

   @Override
   public boolean isCoercibleTo(PDataType targetType) {
     return this.equals(targetType) || PDouble.INSTANCE.isCoercibleTo(targetType);
   }

   @Override
   public Object getSampleValue(Integer maxLength, Integer arrayLength) {
     return RANDOM.get().nextFloat();
   }

   static class FloatCodec extends BaseCodec {

     @Override
     public long decodeLong(byte[] b, int o, SortOrder sortOrder) {
       float v = decodeFloat(b, o, sortOrder);
       if (v < Long.MIN_VALUE || v > Long.MAX_VALUE) {
         throw newIllegalDataException(
             "Value " + v + " cannot be cast to Long without changing its value");
       }
       return (long) v;
     }

     @Override
     public int decodeInt(byte[] b, int o, SortOrder sortOrder) {
       float v = decodeFloat(b, o, sortOrder);
       if (v < Integer.MIN_VALUE || v > Integer.MAX_VALUE) {
         throw newIllegalDataException(
             "Value " + v + " cannot be cast to Integer without changing its value");
       }
       return (int) v;
     }

     @Override
     public byte decodeByte(byte[] b, int o, SortOrder sortOrder) {
       float v = decodeFloat(b, o, sortOrder);
       if (v < Byte.MIN_VALUE || v > Byte.MAX_VALUE) {
         throw newIllegalDataException(
             "Value " + v + " cannot be cast to Byte without changing its value");
       }
       return (byte) v;
     }

     @Override
     public short decodeShort(byte[] b, int o, SortOrder sortOrder) {
       float v = decodeFloat(b, o, sortOrder);
       if (v < Short.MIN_VALUE || v > Short.MAX_VALUE) {
         throw newIllegalDataException(
             "Value " + v + " cannot be cast to Short without changing its value");
       }
       return (short) v;
     }

     @Override
     public double decodeDouble(byte[] b, int o,
         SortOrder sortOrder) {
       return decodeFloat(b, o, sortOrder);
     }

     @Override
     public float decodeFloat(byte[] b, int o, SortOrder sortOrder) {
       Preconditions.checkNotNull(sortOrder);
       checkForSufficientLength(b, o, Bytes.SIZEOF_INT);
       int value;
       if (sortOrder == SortOrder.DESC) {
           value = 0;
           for(int i = o; i < (o + Bytes.SIZEOF_INT); i++) {
             value <<= 8;
             value ^= (b[i] ^ 0xff) & 0xFF;
           }
       } else {
           value = Bytes.toInt(b, o);
       }
       value--;
       value ^= (~value >> Integer.SIZE - 1) | Integer.MIN_VALUE;
       return Float.intBitsToFloat(value);
     }

     @Override
     public int encodeShort(short v, byte[] b, int o) {
       return encodeFloat(v, b, o);
     }

     @Override
     public int encodeLong(long v, byte[] b, int o) {
       return encodeFloat(v, b, o);
     }

     @Override
     public int encodeInt(int v, byte[] b, int o) {
       return encodeFloat(v, b, o);
     }

     @Override
     public int encodeByte(byte v, byte[] b, int o) {
       return encodeFloat(v, b, o);
     }

     @Override
     public int encodeDouble(double v, byte[] b, int o) {
       if (Double.isNaN(v) || v == Double.POSITIVE_INFINITY
           || v == Double.NEGATIVE_INFINITY
           || (v >= -Float.MAX_VALUE && v <= Float.MAX_VALUE)) {
         return encodeFloat((float) v, b, o);
       } else {
         throw newIllegalDataException(
             "Value " + v + " cannot be encoded as an Float without changing its value");
       }

     }

     @Override
     public int encodeFloat(float v, byte[] b, int o) {
       checkForSufficientLength(b, o, Bytes.SIZEOF_FLOAT);
       int i = Float.floatToIntBits(v);
       i = (i ^ ((i >> Integer.SIZE - 1) | Integer.MIN_VALUE)) + 1;
       Bytes.putInt(b, o, i);
       return Bytes.SIZEOF_FLOAT;
     }

     @Override
     public PhoenixArrayFactory getPhoenixArrayFactory() {
       return new PhoenixArrayFactory() {
         @Override
         public PhoenixArray newArray(PDataType type, Object[] elements) {
           return new PhoenixArray.PrimitiveFloatPhoenixArray(type, elements);
         }
       };
     }
   }
 }
	/*
	* 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.phoenix.schema.types;

	import java.math.BigDecimal;
	import java.sql.Types;

	import org.apache.hadoop.hbase.util.Bytes;
	import org.apache.phoenix.schema.SortOrder;

	import com.google.common.base.Preconditions;

	public class PFloat extends PRealNumber<Float> {

	public static final PFloat INSTANCE = new PFloat();

	private PFloat() {
	super("FLOAT", Types.FLOAT, Float.class, new FloatCodec(), 6);
	}

	@Override
	public int compareTo(Object lhs, Object rhs, PDataType rhsType) {
	return PDouble.INSTANCE.compareTo(lhs, rhs, rhsType);
	}

	@Override
	public boolean isFixedWidth() {
	return true;
	}

	@Override
	public Integer getByteSize() {
	return Bytes.SIZEOF_FLOAT;
	}

	@Override
	public Integer getScale(Object o) {
	if (o == null) {
	return null;
	}
	Float v = (Float) o;
	BigDecimal bd = BigDecimal.valueOf(v);
	return bd.scale() == 0 ? null : bd.scale();
	}

	@Override
	public Integer getMaxLength(Object o) {
	if (o == null) {
	return null;
	}
	Float v = (Float) o;
	BigDecimal bd = BigDecimal.valueOf(v);
	return bd.precision();
	}

	@Override
	public byte[] toBytes(Object object) {
	byte[] b = new byte[Bytes.SIZEOF_FLOAT];
	toBytes(object, b, 0);
	return b;
	}

	@Override
	public int toBytes(Object object, byte[] bytes, int offset) {
	if (object == null) {
	throw newIllegalDataException(this + " may not be null");
	}
	return this.getCodec().encodeFloat(((Number) object).floatValue(),
	bytes, offset);
	}

	@Override
	public Object toObject(String value) {
	if (value == null \|\| value.length() == 0) {
	return null;
	}
	try {
	return Float.parseFloat(value);
	} catch (NumberFormatException e) {
	throw newIllegalDataException(e);
	}
	}

	@Override
	public Object toObject(Object object, PDataType actualType) {
	if (object == null) {
	return null;
	}
	float f;
	if (equalsAny(actualType, PFloat.INSTANCE, PUnsignedFloat.INSTANCE)) {
	return object;
	} else if (equalsAny(actualType, PDouble.INSTANCE, PUnsignedDouble.INSTANCE)) {
	double d = (Double) object;
	if (Double.isNaN(d)
	\|\| d == Double.POSITIVE_INFINITY
	\|\| d == Double.NEGATIVE_INFINITY
	\|\| (d >= -Float.MAX_VALUE && d <= Float.MAX_VALUE)) {
	return (float) d;
	} else {
	throw newIllegalDataException(
	actualType + " value " + d + " cannot be cast to Float without changing its value");
	}
	} else if (equalsAny(actualType, PLong.INSTANCE, PUnsignedLong.INSTANCE)) {
	f = (Long) object;
	return f;
	} else if (equalsAny(actualType, PInteger.INSTANCE, PUnsignedInt.INSTANCE)) {
	f = (Integer) object;
	return f;
	} else if (equalsAny(actualType, PTinyint.INSTANCE, PUnsignedTinyint.INSTANCE)) {
	f = (Byte) object;
	return f;
	} else if (equalsAny(actualType, PSmallint.INSTANCE, PUnsignedSmallint.INSTANCE)) {
	f = (Short) object;
	return f;
	} else if (actualType == PDecimal.INSTANCE) {
	BigDecimal dl = (BigDecimal) object;
	return dl.floatValue();
	}
	return throwConstraintViolationException(actualType, this);
	}

	@Override
	public Float toObject(byte[] b, int o, int l, PDataType actualType, SortOrder sortOrder,
	Integer maxLength, Integer scale) {
	if (l <= 0) {
	return null;
	}
	if (equalsAny(actualType, PFloat.INSTANCE, PUnsignedFloat.INSTANCE, PDouble.INSTANCE,
	PUnsignedDouble.INSTANCE, PLong.INSTANCE, PUnsignedLong.INSTANCE, PInteger.INSTANCE,
	PUnsignedInt.INSTANCE, PSmallint.INSTANCE, PUnsignedSmallint.INSTANCE, PTinyint.INSTANCE,
	PUnsignedTinyint.INSTANCE)) {
	return actualType.getCodec().decodeFloat(b, o, sortOrder);
	} else if (actualType == PDecimal.INSTANCE) {
	BigDecimal bd = (BigDecimal) actualType.toObject(b, o, l, actualType, sortOrder);
	return bd.floatValue();
	}

	throwConstraintViolationException(actualType, this);
	return null;
	}

	@Override
	public boolean isCoercibleTo(PDataType targetType, Object value) {
	if (value != null) {
	float f = (Float) value;
	if (targetType.equals(PUnsignedFloat.INSTANCE)) {
	return f >= 0;
	} else if (targetType.equals(PUnsignedLong.INSTANCE)) {
	return (f >= 0 && f <= Long.MAX_VALUE);
	} else if (targetType.equals(PLong.INSTANCE)) {
	return (f >= Long.MIN_VALUE && f <= Long.MAX_VALUE);
	} else if (targetType.equals(PUnsignedInt.INSTANCE)) {
	return (f >= 0 && f <= Integer.MAX_VALUE);
	} else if (targetType.equals(PInteger.INSTANCE)) {
	return (f >= Integer.MIN_VALUE && f <= Integer.MAX_VALUE);
	} else if (targetType.equals(PUnsignedSmallint.INSTANCE)) {
	return (f >= 0 && f <= Short.MAX_VALUE);
	} else if (targetType.equals(PSmallint.INSTANCE)) {
	return (f >= Short.MIN_VALUE && f <= Short.MAX_VALUE);
	} else if (targetType.equals(PTinyint.INSTANCE)) {
	return (f >= Byte.MIN_VALUE && f <= Byte.MAX_VALUE);
	} else if (targetType.equals(PUnsignedTinyint.INSTANCE)) {
	return (f >= 0 && f <= Byte.MAX_VALUE);
	}
	}
	return super.isCoercibleTo(targetType, value);
	}

	@Override
	public boolean isCoercibleTo(PDataType targetType) {
	return this.equals(targetType) \|\| PDouble.INSTANCE.isCoercibleTo(targetType);
	}

	@Override
	public Object getSampleValue(Integer maxLength, Integer arrayLength) {
	return RANDOM.get().nextFloat();
	}

	static class FloatCodec extends BaseCodec {

	@Override
	public long decodeLong(byte[] b, int o, SortOrder sortOrder) {
	float v = decodeFloat(b, o, sortOrder);
	if (v < Long.MIN_VALUE \|\| v > Long.MAX_VALUE) {
	throw newIllegalDataException(
	"Value " + v + " cannot be cast to Long without changing its value");
	}
	return (long) v;
	}

	@Override
	public int decodeInt(byte[] b, int o, SortOrder sortOrder) {
	float v = decodeFloat(b, o, sortOrder);
	if (v < Integer.MIN_VALUE \|\| v > Integer.MAX_VALUE) {
	throw newIllegalDataException(
	"Value " + v + " cannot be cast to Integer without changing its value");
	}
	return (int) v;
	}

	@Override
	public byte decodeByte(byte[] b, int o, SortOrder sortOrder) {
	float v = decodeFloat(b, o, sortOrder);
	if (v < Byte.MIN_VALUE \|\| v > Byte.MAX_VALUE) {
	throw newIllegalDataException(
	"Value " + v + " cannot be cast to Byte without changing its value");
	}
	return (byte) v;
	}

	@Override
	public short decodeShort(byte[] b, int o, SortOrder sortOrder) {
	float v = decodeFloat(b, o, sortOrder);
	if (v < Short.MIN_VALUE \|\| v > Short.MAX_VALUE) {
	throw newIllegalDataException(
	"Value " + v + " cannot be cast to Short without changing its value");
	}
	return (short) v;
	}

	@Override
	public double decodeDouble(byte[] b, int o,
	SortOrder sortOrder) {
	return decodeFloat(b, o, sortOrder);
	}

	@Override
	public float decodeFloat(byte[] b, int o, SortOrder sortOrder) {
	Preconditions.checkNotNull(sortOrder);
	checkForSufficientLength(b, o, Bytes.SIZEOF_INT);
	int value;
	if (sortOrder == SortOrder.DESC) {
	value = 0;
	for(int i = o; i < (o + Bytes.SIZEOF_INT); i++) {
	value <<= 8;
	value ^= (b[i] ^ 0xff) & 0xFF;
	}
	} else {
	value = Bytes.toInt(b, o);
	}
	value--;
	value ^= (~value >> Integer.SIZE - 1) \| Integer.MIN_VALUE;
	return Float.intBitsToFloat(value);
	}

	@Override
	public int encodeShort(short v, byte[] b, int o) {
	return encodeFloat(v, b, o);
	}

	@Override
	public int encodeLong(long v, byte[] b, int o) {
	return encodeFloat(v, b, o);
	}

	@Override
	public int encodeInt(int v, byte[] b, int o) {
	return encodeFloat(v, b, o);
	}

	@Override
	public int encodeByte(byte v, byte[] b, int o) {
	return encodeFloat(v, b, o);
	}

	@Override
	public int encodeDouble(double v, byte[] b, int o) {
	if (Double.isNaN(v) \|\| v == Double.POSITIVE_INFINITY
	\|\| v == Double.NEGATIVE_INFINITY
	\|\| (v >= -Float.MAX_VALUE && v <= Float.MAX_VALUE)) {
	return encodeFloat((float) v, b, o);
	} else {
	throw newIllegalDataException(
	"Value " + v + " cannot be encoded as an Float without changing its value");
	}

	}

	@Override
	public int encodeFloat(float v, byte[] b, int o) {
	checkForSufficientLength(b, o, Bytes.SIZEOF_FLOAT);
	int i = Float.floatToIntBits(v);
	i = (i ^ ((i >> Integer.SIZE - 1) \| Integer.MIN_VALUE)) + 1;
	Bytes.putInt(b, o, i);
	return Bytes.SIZEOF_FLOAT;
	}

	@Override
	public PhoenixArrayFactory getPhoenixArrayFactory() {
	return new PhoenixArrayFactory() {
	@Override
	public PhoenixArray newArray(PDataType type, Object[] elements) {
	return new PhoenixArray.PrimitiveFloatPhoenixArray(type, elements);
	}
	};
	}
	}
	}