44 lines
1.7 KiB
Java
44 lines
1.7 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 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.LLInt;
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import it.cavallium.dbengine.database.structures.LLLong;
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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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default LLDictionary getSet(String name) throws IOException {
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return getDictionary(Column.fixedSet(name).getName().getBytes(StandardCharsets.US_ASCII));
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}
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default LLDictionary getMap(String name) throws IOException {
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return getDictionary(Column.hashMap(name).getName().getBytes(StandardCharsets.US_ASCII));
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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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