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POSpring data mongodb No mapping metadata found for java.lang.String error
 

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  1. POSpring data mongodb No mapping metadata found for java.lang.String error
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    <p>I am trying to use spring data mongodb to retrieve a list of collections from the DB. However as soon as my code runs I get the following exception:</p> <blockquote> <p>org.springframework.data.mapping.model.MappingException: No mapping metadata found for java.lang.String at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:209) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.readValue(MappingMongoConverter.java:1008) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.access$100(MappingMongoConverter.java:75) at org.springframework.data.mongodb.core.convert.MappingMongoConverter$MongoDbPropertyValueProvider.getPropertyValue(MappingMongoConverter.java:957) at org.springframework.data.mongodb.core.convert.MappingMongoConverter$MongoDbPropertyValueProvider.getPropertyValue(MappingMongoConverter.java:924) at org.springframework.data.mapping.model.PersistentEntityParameterValueProvider.getParameterValue(PersistentEntityParameterValueProvider.java:78) at org.springframework.data.mapping.model.SpELExpressionParameterValueProvider.getParameterValue(SpELExpressionParameterValueProvider.java:63) at org.springframework.data.convert.ReflectionEntityInstantiator.createInstance(ReflectionEntityInstantiator.java:70) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:232) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:212) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:176) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:172) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:75)</p> </blockquote> <p>I can't seem to find the solution for this anywhere. Any help would be highly appreciated</p> <p>Here is my java code which is used to retrieve the data:</p> <pre><code>public List&lt;GateAppointment&gt; listGateAppointments() { List&lt;GateAppointment&gt; gateAppointments = null; try{ MongoOperations mongoOperation = (MongoOperations)getMongoTemplate(); gateAppointments = mongoOperation.findAll(GateAppointment.class,COLLECTION_NAME); } catch(Exception e){ e.printStackTrace(); } return gateAppointments; } </code></pre> <p>And <code>public static final String COLLECTION_NAME = "gateVisitAppointments";</code></p> <p>The following is a sample of my DB data(Sorry, cant post image directly as I dont have 10 rep):</p> <p><a href="http://i40.tinypic.com/35jihll.jpg" rel="nofollow">Please click to view DB Image</a></p> <p>Following is my GateAppointment class file properties (The rest of the file has all the setters and getters):</p> <pre><code>package com.ig.avs.common.entity.db; public class GateAppointment { /** * The Class GateAppointment. * */ private String gate; private String gateAppointmentNbr; private String bol; private String containerNbr; private String iso; private String line; private String transactionType; private String truckingCompany; private String truckId; private String appoinmentDate; private String apSlot; private String slotStartTime; private String slotEndTime; private String isMapped; private String status; </code></pre>
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    1. USTrisha
    1. USuser3008362
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      1. POSpring data mongodb No mapping metadata found for java.lang.String error
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    1. COI think this means that one of the variable names is not the same (spelling, upper/lower case, or 'foo.bar' rather than 'bar') as the names of the fields in your mongodb collection
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      1. POSpring data mongodb No mapping metadata found for java.lang.String error
      1. USMzzl
    2. COHi Trisha. Thanks. I checked the fields once again and I saw that the different documents in the collections had different fields. Once I ensured that all the documents in the collection have the same fields, it worked!
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      1. USuser3008362
 

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