你好,有关于如何
<dependency>
<groupId>org.jetbrains.xodus</groupId>
<artifactId>xodus-query</artifactId>
<version>1.2.3</version>
</dependency>特别是,UniqueKeyIndicesEngine到索引实体。例如,这个代码:
getEntityStore().executeInTransaction(new StoreTransactionalExecutable() {
@Override
public void execute(@NotNull StoreTransaction txn) {
final PersistentStoreTransaction t = (PersistentStoreTransaction) txn;
entity1.setProperty("column0", 1);
entity1.setProperty("column1", "o");
ukiEngine.deleteUniqueKey(t, new TestIndex("column0", "column1"), Arrays.asList((Comparable) Integer.valueOf(0), "oo"));
ukiEngine.insertUniqueKey(t, new TestIndex("column0", "column1"), Arrays.asList((Comparable) Integer.valueOf(1), "o"), entity1);
}
});发布于 2018-11-12 08:48:21
xodus-query的任何功能都是Xodus-DNQ项目的辅助功能,Xodus-查询模块最终将被移动到Xodus-DNQ。请仔细查看Xodus-DNQ,因为它提供了模式定义、字段的索引、约束等。
https://stackoverflow.com/questions/53216273
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