23 lines
692 B
Java
23 lines
692 B
Java
package it.cavallium.dbengine.database.collections;
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import java.io.IOException;
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@SuppressWarnings("SpellCheckingInspection")
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public interface JoinerBlocking<KEY, DBVALUE, JOINEDVALUE> {
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interface ValueGetterBlocking<KEY, VALUE> {
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VALUE get(KEY key) throws IOException;
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}
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/**
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* Warning! You must only join with immutable data to ensure data correctness.
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* Good examples: message id, send date, ...
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* Bad examples: message content, views, edited, ...
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*/
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JOINEDVALUE join(ValueGetterBlocking<KEY, DBVALUE> dbValueGetter, DBVALUE value) throws IOException;
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static <KEY, DBVALUE> JoinerBlocking<KEY, DBVALUE, DBVALUE> direct() {
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return (dbValueGetter, value) -> value;
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};
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}
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