66 lines
2.6 KiB
Java
66 lines
2.6 KiB
Java
package it.cavallium.dbengine.database;
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import com.google.common.primitives.Ints;
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import com.google.common.primitives.Longs;
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import it.cavallium.dbengine.database.structures.LLDeepMap;
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import java.io.Closeable;
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import java.io.IOException;
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import java.nio.charset.StandardCharsets;
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import it.cavallium.dbengine.database.structures.LLFixedDeepSet;
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import it.cavallium.dbengine.database.structures.LLInt;
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import it.cavallium.dbengine.database.structures.LLLong;
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import it.cavallium.dbengine.database.structures.LLMap;
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import it.cavallium.dbengine.database.structures.LLSet;
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public interface LLKeyValueDatabase extends Closeable, LLSnapshottable, LLKeyValueDatabaseStructure {
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LLSingleton getSingleton(byte[] singletonListColumnName, byte[] name, byte[] defaultValue)
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throws IOException;
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LLDictionary getDictionary(byte[] columnName) throws IOException;
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LLDeepDictionary getDeepDictionary(byte[] columnName, int keySize, int key2Size) throws IOException;
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default LLSet getSet(String name) throws IOException {
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LLDictionary dictionary = getDictionary(
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Column.fixedSet(name).getName().getBytes(StandardCharsets.US_ASCII));
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return new LLSet(dictionary);
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}
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default LLMap getMap(String name) throws IOException {
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LLDictionary dictionary = getDictionary(
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Column.hashMap(name).getName().getBytes(StandardCharsets.US_ASCII));
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return new LLMap(dictionary);
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}
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default LLFixedDeepSet getDeepSet(String name, int keySize, int key2Size) throws IOException {
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LLDeepDictionary deepDictionary = getDeepDictionary(
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Column.fixedSet(name).getName().getBytes(StandardCharsets.US_ASCII), keySize, key2Size);
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return new LLFixedDeepSet(deepDictionary);
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}
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default LLDeepMap getDeepMap(String name, int keySize, int key2Size) throws IOException {
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LLDeepDictionary deepDictionary = getDeepDictionary(
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Column.hashMap(name).getName().getBytes(StandardCharsets.US_ASCII), keySize, key2Size);
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return new LLDeepMap(deepDictionary);
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}
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default LLInt getInteger(String singletonListName, String name, int defaultValue)
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throws IOException {
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LLSingleton singleton = getSingleton(
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Column.special(singletonListName).getName().getBytes(StandardCharsets.US_ASCII),
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name.getBytes(StandardCharsets.US_ASCII), Ints.toByteArray(defaultValue));
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return new LLInt(singleton);
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}
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default LLLong getLong(String singletonListName, String name, long defaultValue)
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throws IOException {
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LLSingleton singleton = getSingleton(
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Column.special(singletonListName).getName().getBytes(StandardCharsets.US_ASCII),
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name.getBytes(StandardCharsets.US_ASCII), Longs.toByteArray(defaultValue));
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return new LLLong(singleton);
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}
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long getProperty(String propertyName) throws IOException;
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}
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