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java.lang.Objectorg.h2.mvstore.rtree.SpatialDataType
public class SpatialDataType
A spatial data type. This class supports up to 31 dimensions. Each dimension can have a minimum and a maximum value of type float. For each dimension, the maximum value is only stored when it is not the same as the minimum.
Constructor Summary | |
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SpatialDataType(int dimensions)
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Method Summary | |
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int |
compare(java.lang.Object a,
java.lang.Object b)
Compare two keys. |
boolean |
contains(java.lang.Object objA,
java.lang.Object objB)
Check whether a contains b. |
boolean |
equals(java.lang.Object a,
java.lang.Object b)
Check whether two spatial values are equal. |
float |
getAreaIncrease(java.lang.Object objA,
java.lang.Object objB)
Get the area increase by extending a to contain b. |
int[] |
getExtremes(java.util.ArrayList<java.lang.Object> list)
Get the most extreme pair (elements that are as far apart as possible). |
int |
getMemory(java.lang.Object obj)
Estimate the used memory in bytes. |
void |
increaseBounds(java.lang.Object bounds,
java.lang.Object add)
Increase the bounds in the given spatial object. |
boolean |
isInside(java.lang.Object objA,
java.lang.Object objB)
Check whether a is completely inside b and does not touch the given bound. |
boolean |
isOverlap(java.lang.Object objA,
java.lang.Object objB)
Check whether the two objects overlap. |
java.lang.Object |
read(java.nio.ByteBuffer buff)
Read an object. |
void |
read(java.nio.ByteBuffer buff,
java.lang.Object[] obj,
int len,
boolean key)
Read a list of objects. |
void |
write(WriteBuffer buff,
java.lang.Object obj)
Write an object. |
void |
write(WriteBuffer buff,
java.lang.Object[] obj,
int len,
boolean key)
Write a list of objects. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public SpatialDataType(int dimensions)
Method Detail |
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public int compare(java.lang.Object a, java.lang.Object b)
DataType
compare
in interface DataType
a
- the first keyb
- the second key
public boolean equals(java.lang.Object a, java.lang.Object b)
a
- the first valueb
- the second value
public int getMemory(java.lang.Object obj)
DataType
getMemory
in interface DataType
obj
- the object
public void read(java.nio.ByteBuffer buff, java.lang.Object[] obj, int len, boolean key)
DataType
read
in interface DataType
buff
- the target bufferobj
- the objectslen
- the number of objects to readkey
- whether the objects are keyspublic void write(WriteBuffer buff, java.lang.Object[] obj, int len, boolean key)
DataType
write
in interface DataType
buff
- the target bufferobj
- the objectslen
- the number of objects to writekey
- whether the objects are keyspublic void write(WriteBuffer buff, java.lang.Object obj)
DataType
write
in interface DataType
buff
- the target bufferobj
- the valuepublic java.lang.Object read(java.nio.ByteBuffer buff)
DataType
read
in interface DataType
buff
- the source buffer
public boolean isOverlap(java.lang.Object objA, java.lang.Object objB)
objA
- the first objectobjB
- the second object
public void increaseBounds(java.lang.Object bounds, java.lang.Object add)
bounds
- the bounds (may be modified)add
- the valuepublic float getAreaIncrease(java.lang.Object objA, java.lang.Object objB)
objA
- the bounding boxobjB
- the object
public boolean contains(java.lang.Object objA, java.lang.Object objB)
objA
- the bounding boxobjB
- the object
public boolean isInside(java.lang.Object objA, java.lang.Object objB)
objA
- the object to checkobjB
- the bounds
public int[] getExtremes(java.util.ArrayList<java.lang.Object> list)
list
- the objects
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