本文整理了Java中org.mongodb.morphia.Datastore.findAndModify()方法的一些代码示例，展示了Datastore.findAndModify()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Datastore.findAndModify()方法的具体详情如下：
包路径：org.mongodb.morphia.Datastore
类名称：Datastore
方法名：findAndModify

Datastore.findAndModify介绍

[英]Find the first Entity from the Query, and modify it.
[中]从查询中找到第一个实体，并对其进行修改。

代码示例

代码示例来源：origin: jooby-project/jooby

@Override
public void prePersist(final Object entity, final DBObject dbObj, final Mapper mapper) {
 MappedClass mclass = mapper.getMappedClass(entity);
 Field id = mclass.getIdField();
 if (id != null && id.getAnnotation(GeneratedValue.class) != null) {
  try {
   id.setAccessible(true);
   final String collName = gen.value(mclass.getClazz());
   final Query<StoredId> q = db.find(StoredId.class, "_id", collName);
   final UpdateOperations<StoredId> uOps = db.createUpdateOperations(StoredId.class)
     .inc("value");
   StoredId newId = db.findAndModify(q, uOps);
   if (newId == null) {
    newId = new StoredId(collName);
    db.save(newId);
   }
   id.set(entity, newId.value);
  } catch (Exception ex) {
   throw new IllegalStateException("Can't generate ID on " + mclass, ex);
  }
 }
}

代码示例来源：origin: de.mhus.lib/mhu-lib-persistence

public <T> T findAndModify(Query<T> query, UpdateOperations<T> operations, FindAndModifyOptions options) {
  return datastore.findAndModify(query, operations, options);
}

代码示例来源：origin: de.mhus.lib/mhu-lib-persistence

public <T> T findAndModify(Query<T> query, UpdateOperations<T> operations) {
  return datastore.findAndModify(query, operations);
}

代码示例来源：origin: BlackLabs/play-morphia

public <T> T findAndModify(MorphiaQuery q, boolean oldVersion) {
  return (T)ds().findAndModify((Query)q.getMorphiaQuery(), (UpdateOperations)u_, oldVersion);
}

代码示例来源：origin: BlackLabs/play-morphia

public <T> T findAndModify(MorphiaQuery q, boolean oldVersion, boolean createIfMissing) {
  return (T)ds().findAndModify((Query)q.getMorphiaQuery(), (UpdateOperations)u_, oldVersion, createIfMissing);
}

代码示例来源：origin: BlackLabs/play-morphia

public <T> T findAndModify(MorphiaQuery q) {
  return (T)ds().findAndModify((Query)q.getMorphiaQuery(), (UpdateOperations)u_);
}

代码示例来源：origin: org.jooby/jooby-morphia

@Override
public void prePersist(final Object entity, final DBObject dbObj, final Mapper mapper) {
 MappedClass mclass = mapper.getMappedClass(entity);
 Field id = mclass.getIdField();
 if (id != null && id.getAnnotation(GeneratedValue.class) != null) {
  try {
   id.setAccessible(true);
   final String collName = gen.value(mclass.getClazz());
   final Query<StoredId> q = db.find(StoredId.class, "_id", collName);
   final UpdateOperations<StoredId> uOps = db.createUpdateOperations(StoredId.class)
     .inc("value");
   StoredId newId = db.findAndModify(q, uOps);
   if (newId == null) {
    newId = new StoredId(collName);
    db.save(newId);
   }
   id.set(entity, newId.value);
  } catch (Exception ex) {
   throw new IllegalStateException("Can't generate ID on " + mclass, ex);
  }
 }
}

代码示例来源：origin: org.actframework/act-morphia

/**
 * Returns the next number in the sequence specified . If sequence does not exists
 * then it will be created
 * @param name the sequence name
 * @return the next number in the sequence
 */
public long next(String name) {
  UpdateOperations<Sequence> op = ds.createUpdateOperations(Sequence.class);
  op.inc("number");
  Query<Sequence> q = ds.createQuery(Sequence.class).field("_id").equal(name);
  Sequence seq = ds.findAndModify(q, op, false, true);
  return seq.number;
}

代码示例来源：origin: BlackLabs/play-morphia

public static Seq next(String name) {
  Datastore ds = MorphiaPlugin.ds();
  Query<Seq> q = ds.find(Seq.class, "_id", name);
  UpdateOperations<Seq> o = ds.createUpdateOperations(Seq.class).inc("value");
  Seq newId = ds.findAndModify(q, o);
  if (null == newId) {
    newId = new Seq(name);
    ds.save(newId);
  }
  return newId;
}

代码示例来源：origin: groupon/DotCi

public int assignNextBuildNumber(final DynamicProject project) {
  final Datastore datastore = getDatastore();
  BuildNumberCounter seq = datastore.findAndModify(
    datastore.find(BuildNumberCounter.class, "key = ", project.getFullName()), // query
    datastore.createUpdateOperations(BuildNumberCounter.class).inc("counter") // update
  );
  if (seq == null) {
    seq = new BuildNumberCounter(project.getFullName(), 1);
    datastore.save(seq);
  }
  return seq.getCounter();
}