com.devsmart.microdb

Interface Driver

All Known Implementing Classes:

MapDBDriver

public interface Driver

Method Summary

Modifier and Type	Method and Description
<T extends java.lang.Comparable<T>> void	addIndex(java.lang.String indexName, MapFunction<T> mapFunction)
void	beginTransaction()
void	close()
void	commitTransaction()
void	compact()
void	delete(java.util.UUID key) delete the database object with key key
void	deleteIndex(java.lang.String indexName)
java.util.UUID	genId()
com.devsmart.ubjson.UBValue	get(java.util.UUID key) loads the database value with key
com.devsmart.ubjson.UBObject	getMeta()
long	incrementLongField(java.lang.String fieldName)
void	insert(java.util.UUID id, com.devsmart.ubjson.UBValue value) inserts a new value into the the database.
<T extends java.lang.Comparable<T>> Cursor	queryIndex(java.lang.String indexName, T min, boolean minInclusive, T max, boolean maxInclusive)
void	recomputeIndex(java.lang.String indexName)
void	rollbackTransaction()
void	saveMeta(com.devsmart.ubjson.UBObject obj)
void	update(java.util.UUID id, com.devsmart.ubjson.UBValue value) replace value with key id with new value value.

Method Detail

close

void close()

getMeta

com.devsmart.ubjson.UBObject getMeta()
                              throws java.io.IOException

Throws:

java.io.IOException

saveMeta

void saveMeta(com.devsmart.ubjson.UBObject obj)
       throws java.io.IOException

Throws:

java.io.IOException

get

com.devsmart.ubjson.UBValue get(java.util.UUID key)
                         throws java.io.IOException

loads the database value with key

Parameters:

key -

Returns:

the value stored in the database or null if it does not exist

Throws:

java.io.IOException

insert

void insert(java.util.UUID id,
            com.devsmart.ubjson.UBValue value)
     throws java.io.IOException

inserts a new value into the the database.

Parameters:

id - the new object key. This value should have originated from a call to genId()

value -

Throws:

java.io.IOException

genId

java.util.UUID genId()

update

void update(java.util.UUID id,
            com.devsmart.ubjson.UBValue value)
     throws java.io.IOException

replace value with key id with new value value. If a value with with id does not exist, insert the key-value pair.

Parameters:

id -

value -

Throws:

java.io.IOException

delete

void delete(java.util.UUID key)
     throws java.io.IOException

delete the database object with key key

Parameters:

key -

Throws:

java.io.IOException

incrementLongField

long incrementLongField(java.lang.String fieldName)

queryIndex

<T extends java.lang.Comparable<T>> Cursor queryIndex(java.lang.String indexName,
                                                      T min,
                                                      boolean minInclusive,
                                                      T max,
                                                      boolean maxInclusive)
                                               throws java.io.IOException

Throws:

java.io.IOException

addIndex

<T extends java.lang.Comparable<T>> void addIndex(java.lang.String indexName,
                                                  MapFunction<T> mapFunction)
                                           throws java.io.IOException

Throws:

java.io.IOException

recomputeIndex

void recomputeIndex(java.lang.String indexName)

deleteIndex

void deleteIndex(java.lang.String indexName)

beginTransaction

void beginTransaction()
               throws java.io.IOException

Throws:

java.io.IOException

commitTransaction

void commitTransaction()
                throws java.io.IOException

Throws:

java.io.IOException

rollbackTransaction

void rollbackTransaction()
                  throws java.io.IOException

Throws:

java.io.IOException

compact

void compact()
      throws java.io.IOException

Throws:

java.io.IOException