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java.lang.Objectorg.geotools.data.AbstractDataStore
org.geotools.data.memory.MemoryDataStore
public class MemoryDataStore
This is an example implementation of a DataStore used for testing.
It serves as an example implementation of:
This class will also illustrate the use of In-Process locking when the time comes.
Field Summary | |
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protected java.util.Map<java.lang.String,java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeature>> |
memory
Memory holds Map of Feature by fid by typeName. |
protected java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeatureType> |
schema
Schema holds FeatureType by typeName |
Fields inherited from class org.geotools.data.AbstractDataStore |
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isWriteable, listenerManager, LOGGER |
Constructor Summary | |
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MemoryDataStore()
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MemoryDataStore(FeatureCollection<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> collection)
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MemoryDataStore(FeatureIterator<org.opengis.feature.simple.SimpleFeature> reader)
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MemoryDataStore(FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> reader)
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MemoryDataStore(org.opengis.feature.simple.SimpleFeature[] array)
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MemoryDataStore(org.opengis.feature.simple.SimpleFeatureType featureType)
Construct an MemoryDataStore around an empty collection of the provided SimpleFeatureType |
Method Summary | |
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void |
addFeature(org.opengis.feature.simple.SimpleFeature feature)
Adds a single Feature to the correct typeName entry. |
void |
addFeatures(java.util.Collection<?> collection)
Configures MemoryDataStore with Collection. |
void |
addFeatures(FeatureCollection<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> collection)
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void |
addFeatures(FeatureIterator<org.opengis.feature.simple.SimpleFeature> reader)
Configures MemoryDataStore with FeatureReader. |
void |
addFeatures(FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> reader)
Configures MemoryDataStore with FeatureReader. |
void |
addFeatures(org.opengis.feature.simple.SimpleFeature[] features)
Configures MemoryDataStore with feature array. |
FeatureWriter<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> |
createFeatureWriter(java.lang.String typeName,
Transaction transaction)
Provides FeatureWriter over the entire contents of typeName . |
void |
createSchema(org.opengis.feature.simple.SimpleFeatureType featureType)
Adds support for a new featureType to MemoryDataStore. |
protected java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeature> |
features(java.lang.String typeName)
Access featureMap for typeName. |
protected ReferencedEnvelope |
getBounds(Query query)
Computes the bounds of the features for the specified feature type that satisfy the query provided that there is a fast way to get that result. |
protected int |
getCount(Query query)
Gets the number of the features that would be returned by this query for the specified feature type. |
FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> |
getFeatureReader(java.lang.String typeName)
Provides FeatureReader typeName . |
org.opengis.feature.simple.SimpleFeatureType |
getSchema(java.lang.String typeName)
SimpleFeatureType access by typeName . |
java.lang.String[] |
getTypeNames()
List of available types provided by this DataStore. |
Methods inherited from class org.geotools.data.AbstractDataStore |
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createLockingManager, createMetadata, dispose, getFeatureReader, getFeatureReader, getFeatureSource, getFeatureSource, getFeatureWriter, getFeatureWriter, getFeatureWriter, getFeatureWriterAppend, getInfo, getLockingManager, getNames, getSchema, getSupportedHints, getUnsupportedFilter, getView, state, updateSchema, updateSchema |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected java.util.Map<java.lang.String,java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeature>> memory
protected java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeatureType> schema
Constructor Detail |
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public MemoryDataStore()
public MemoryDataStore(org.opengis.feature.simple.SimpleFeatureType featureType)
schema
- An empty feature collection of this type will be made availablepublic MemoryDataStore(FeatureCollection<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> collection)
public MemoryDataStore(org.opengis.feature.simple.SimpleFeature[] array)
public MemoryDataStore(FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> reader) throws java.io.IOException
java.io.IOException
public MemoryDataStore(FeatureIterator<org.opengis.feature.simple.SimpleFeature> reader) throws java.io.IOException
java.io.IOException
Method Detail |
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public void addFeatures(FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> reader) throws java.io.IOException
reader
- New contents to add
java.io.IOException
- If problems are encountered while adding
DataSourceException
- See IOExceptionpublic void addFeatures(FeatureIterator<org.opengis.feature.simple.SimpleFeature> reader) throws java.io.IOException
reader
- New contents to add
java.io.IOException
- If problems are encountered while adding
DataSourceException
- See IOExceptionpublic void addFeatures(java.util.Collection<?> collection)
You may use this to create a MemoryDataStore from a FeatureCollection.
collection
- Collection of features to add
java.lang.IllegalArgumentException
- If provided collection is emptypublic void addFeatures(FeatureCollection<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> collection)
public void addFeatures(org.opengis.feature.simple.SimpleFeature[] features)
features
- Array of features to add
java.lang.IllegalArgumentException
- If provided feature array is emptypublic void addFeature(org.opengis.feature.simple.SimpleFeature feature)
This is an internal opperation used for setting up MemoryDataStore - please use FeatureWriter for generatl use.
This method is willing to create new FeatureTypes for MemoryDataStore.
feature
- Individual feature to addprotected java.util.Map<java.lang.String,org.opengis.feature.simple.SimpleFeature> features(java.lang.String typeName) throws java.io.IOException
typeName
-
java.io.IOException
- If typeName cannot be foundpublic java.lang.String[] getTypeNames()
getTypeNames
in interface DataStore
getTypeNames
in class AbstractDataStore
org.geotools.data.AbstractDataStore#getFeatureTypes()
public org.opengis.feature.simple.SimpleFeatureType getSchema(java.lang.String typeName) throws java.io.IOException
typeName
.
getSchema
in interface DataStore
getSchema
in class AbstractDataStore
typeName
-
typeName
java.io.IOException
SchemaNotFoundException
- DOCUMENT ME!AbstractDataStore.getSchema(java.lang.String)
public void createSchema(org.opengis.feature.simple.SimpleFeatureType featureType) throws java.io.IOException
FeatureTypes are stored by typeName, an IOException will be thrown if the requested typeName is already in use.
createSchema
in interface DataAccess<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature>
createSchema
in class AbstractDataStore
featureType
- SimpleFeatureType to be added
java.io.IOException
- If featureType already existsorg.geotools.data.DataStore#createSchema(org.geotools.feature.SimpleFeatureType)
public FeatureReader<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> getFeatureReader(java.lang.String typeName) throws java.io.IOException
typeName
.
Implements getFeatureReader contract for AbstractDataStore.
getFeatureReader
in class AbstractDataStore
typeName
-
java.io.IOException
- If typeName could not be found
DataSourceException
- See IOExceptionAbstractDataStore.getFeatureSource(java.lang.String)
public FeatureWriter<org.opengis.feature.simple.SimpleFeatureType,org.opengis.feature.simple.SimpleFeature> createFeatureWriter(java.lang.String typeName, Transaction transaction) throws java.io.IOException
typeName
.
Implements getFeatureWriter contract for AbstractDataStore.
createFeatureWriter
in class AbstractDataStore
typeName
- name of FeatureType we wish to modifytransaction
- a feature writer
java.io.IOException
- If writer cannot be obtained for typeName
DataSourceException
- See IOExceptionAbstractDataStore.getFeatureSource(java.lang.String)
protected ReferencedEnvelope getBounds(Query query) throws java.io.IOException
AbstractDataStore
Will return null if there is not fast way to compute the bounds. Since it's based on some kind of header/cached information, it's not guaranteed to be real bound of the features
getBounds
in class AbstractDataStore
SchemaNotFoundException
java.io.IOException
org.geotools.data.AbstractDataStore#getBounds(java.lang.String,
org.geotools.data.Query)
protected int getCount(Query query) throws java.io.IOException
AbstractDataStore
If getBounds(Query) returns -1
due to expense consider
using getFeatures(Query).getCount()
as a an alternative.
getCount
in class AbstractDataStore
query
- Contains the Filter and MaxFeatures to find the bounds for.
-1
if count is too expensive to calculate or any errors or occur.
java.io.IOException
org.geotools.data.AbstractDataStore#getCount(java.lang.String, org.geotools.data.Query)
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