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package io.ebeaninternal.api;

import java.util.Collection;
import java.util.Collections;
import java.util.List;

/**
 * Used for bean cache lookup with a single id value.
 */
public final class CacheIdLookupSingle implements CacheIdLookup {

  private final Object idValue;
  private boolean found;

  public CacheIdLookupSingle(Object idValue) {
    this.idValue = idValue;
  }

  @Override
  public Collection idValues() {
    return Collections.singleton(idValue);
  }

  @Override
  public List removeHits(BeanCacheResult cacheResult) {
    final List> hits = cacheResult.hits();
    if (hits.size() == 1) {
      found = true;
      return Collections.singletonList(hits.get(0).bean());
    }
    return Collections.emptyList();
  }

  @Override
  public boolean allHits() {
    return found;
  }
}