spring data mongodb中，如果对象中的属性不想加入到数据库字段中

spring data mongodb中，如果对象中的属性不想加入到数据库字段中，可加@Transient注解，声明为透明属性

spring data mongodb 官网帮助文档

http://www.boyunjian.com/javadoc/org.springframework.data/spring-data-mongodb/1.2.3.RELEASE/_/org/springframework/data/mongodb/core/query/Criteria.html#all(java.util.Collection

package ywzn.by.scity.service.pojo;

import java.io.Serializable;
import java.sql.Timestamp;
import java.util.Date;

import org.springframework.data.annotation.Id;
import org.springframework.data.annotation.Transient;
import org.springframework.data.mongodb.core.index.CompoundIndex;
import org.springframework.data.mongodb.core.index.CompoundIndexes;
import org.springframework.data.mongodb.core.mapping.DBRef;
import org.springframework.data.mongodb.core.mapping.Document;
import org.springframework.data.mongodb.core.mapping.Field;


@Document(collection="YpObjRelationPojo")
@CompoundIndexes({@CompoundIndex(name="objrelation",def="{'sourceid':1,'targetid':1}")})
public class YpObjRelationPojo implements Serializable {

    @Id
    private String Id;                    // '主键id'
    @Field("sourceid")
    private String sourceId;            //对象id
    @Field("targetid")
    private String targetId;            //对象id    
    @Field("caseId")
    private String caseId;                //案件id
    @Transient                            //配置透明属性
    private int source;                    // '关系起点       不存数据库
    @Transient
    private int target;                    // '关系终点    不存数据库
    @Field("relation")
    private String relation;            // '关系名称'
    @Field("create_time")
    private Date create_Time;            // '创建时间'
    
    public YpObjRelationPojo(String id, String sourceid, String targetid,
            String caseId, String relation, Date create_time) {
        super();
        this.Id = id;
        this.sourceId = sourceid;
        this.targetId = targetid;
        this.caseId = caseId;
        this.relation = relation;
        this.create_Time = create_time;
    }
    
    public YpObjRelationPojo(String id, String sourceid, String targetid,
            String caseId, String relation) {
        super();
        this.Id = id;
        this.sourceId = sourceid;
        this.targetId = targetid;
        this.caseId = caseId;
        this.relation = relation;
    }

    public YpObjRelationPojo() {
        super();
    }

    
    @Override
    public String toString() {
        return "YpObjRelationPojo [id=" + Id + ", sourceid=" + sourceId
                + ", targetid=" + targetId + ", caseId=" + caseId + ", source="
                + source + ", target=" + target + ", relation=" + relation
                + ", create_time=" + create_Time + "]";
    }

    /**
     * @return the id
     */
    public String getId() {
        return Id;
    }

    /**
     * @param id the id to set
     */
    public void setId(String id) {
        Id = id;
    }

    /**
     * @return the sourceId
     */
    public String getSourceId() {
        return sourceId;
    }

    /**
     * @param sourceId the sourceId to set
     */
    public void setSourceId(String sourceId) {
        this.sourceId = sourceId;
    }

    /**
     * @return the targetId
     */
    public String getTargetId() {
        return targetId;
    }

    /**
     * @param targetId the targetId to set
     */
    public void setTargetId(String targetId) {
        this.targetId = targetId;
    }

    /**
     * @return the caseId
     */
    public String getCaseId() {
        return caseId;
    }

    /**
     * @param caseId the caseId to set
     */
    public void setCaseId(String caseId) {
        this.caseId = caseId;
    }

    /**
     * @return the source
     */
    public int getSource() {
        return source;
    }

    /**
     * @param source the source to set
     */
    public void setSource(int source) {
        this.source = source;
    }

    /**
     * @return the target
     */
    public int getTarget() {
        return target;
    }

    /**
     * @param target the target to set
     */
    public void setTarget(int target) {
        this.target = target;
    }

    /**
     * @return the relation
     */
    public String getRelation() {
        return relation;
    }

    /**
     * @param relation the relation to set
     */
    public void setRelation(String relation) {
        this.relation = relation;
    }

    /**
     * @return the create_Time
     */
    public Date getCreate_Time() {
        return create_Time;
    }

    /**
     * @param create_Time the create_Time to set
     */
    public void setCreate_Time(Date create_Time) {
        this.create_Time = create_Time;
    }

}