@@ -4,12 +4,16 @@ This project contains samples of Query-by-Example of Spring Data MongoDB.
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## Support for Query-by-Example
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Query by Example (QBE) is a user-friendly querying technique with a simple interface. It allows dynamic query creation and does not require to write queries containing field names. In fact, Query by Example does not require to write queries using JPA-QL at all.
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Query by Example (QBE) is a user-friendly querying technique with a simple interface. It
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allows dynamic query creation and does not require to write queries containing field
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names. In fact, Query by Example does not require to write queries using BSON at all.
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An `Example` takes a data object (usually the entity object or a subtype of it) and a specification how to match properties. You can use Query by Example with `MongoOperations` and Repositories.
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An `Example` takes a data object (usually the entity object or a subtype of it) and a
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specification how to match properties. You can use Query by Example with `MongoOperations`
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and Repositories.
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```java
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public interface PersonRepository extends CrudRepository<Person, String>, QueryByExampleExecutor {
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interface PersonRepository extends CrudRepository<Person, String>, QueryByExampleExecutor<Person> {
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}
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```
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