Session session = ((FullTextHibernateSessionProxy)entityManager.getDelegate()).getSessionFactory().getCurrentSession();
      Criteria searchFilter = session.createCriteria(Request.class);

      LuceneBuilder builder = new LuceneBuilder(searchFilter,Request.class,
            "title","shortDescription","addendum");

      Query q = builder.getQuery(entityManager,query);
      if(from > 0) q.setFirstResult(from);
      if(max > 0) q.setMaxResults(max);
      return q.getResultList();

public Query getQuery(FullTextEntityManager em,String searchText) throws ParseException{
      MultiFieldQueryParser parser = new MultiFieldQueryParser(fields.toArray(new String[0]),new StandardAnalyzer());
      org.apache.lucene.search.Query q = parser.parse(searchText);
      FullTextQuery query = em.createFullTextQuery(q, cls);
      if(criteria != null) query.setCriteriaQuery(criteria);
      return query;
   }

package com.marroon.webapp.request.model;

import java.io.Serializable;
import java.util.Date;
import java.util.Set;

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Transient;

import org.hibernate.search.annotations.Analyzer;
import org.hibernate.search.annotations.DocumentId;
import org.hibernate.search.annotations.Field;
import org.hibernate.search.annotations.Index;
import org.hibernate.search.annotations.Indexed;
import org.hibernate.search.annotations.IndexedEmbedded;
import org.hibernate.search.annotations.Store;
import org.hibernate.validator.Length;
import org.hibernate.validator.NotEmpty;
import org.hibernate.validator.NotNull;

import com.marroon.webapp.admin.model.User;
import com.marroon.webapp.common.model.Category;
import com.marroon.webapp.common.model.Location;

@Entity
@Indexed
@Analyzer
public class Request implements Serializable{
   
   /**
    *
    */
   private static final long serialVersionUID = 3195217010000585539L;
   private Long id;
   private User client;
   private Set<Discussion> discussions;
   private Category category;
   private String title;
   private String shortDescription;
   private String addendum;
   private Double budget;
   private Date creationDate;
   private Date lastModificationDate;
   private Date deadline;
   private Location location;
   private String answer;
   private boolean closed;
   private boolean archived;
   
   @Field(store=Store.NO,index=Index.NO)
   public boolean isClosed() {
      return closed;
   }
   public void setClosed(boolean closed) {
      this.closed = closed;
   }
   public boolean isArchived() {
      return archived;
   }
   public void setArchived(boolean archived) {
      this.archived = archived;
   }
   @Id
   @GeneratedValue(strategy=GenerationType.AUTO)
   @DocumentId
   public Long getId() {
      return id;
   }
   public Double getBudget(){
      return this.budget;
   }
   
   @ManyToOne(targetEntity=User.class)
   public User getClient() {
      return client;
   }
   
   @ManyToOne(targetEntity=Category.class)
   public Category getCategory() {
      return category;
   }
   
   @NotNull @NotEmpty
   @Field(index=Index.TOKENIZED,store=Store.NO)
   public String getTitle() {
      return title;
   }
   
   @NotNull @NotEmpty
   @Length(max=2000)
   @Field(index=Index.TOKENIZED,store=Store.NO)
   public String getShortDescription() {
      return shortDescription;
   }
   @ManyToOne(targetEntity=Location.class)
   public Location getLocation(){
      return location;
   }
   
   @Field(index=Index.TOKENIZED,store=Store.NO)
   public String getAddendum() {
      return addendum;
   }

   public Date getCreationDate() {
      return creationDate;
   }
   
   public Date getLastModificationDate() {
      return lastModificationDate;
   }
   
   @OneToMany(mappedBy="request",fetch=FetchType.EAGER,cascade=CascadeType.ALL)
   public Set<Discussion> getDiscussions() {
      return discussions;
   }
   
   public Date getDeadline(){
      return deadline;
   }
   /* SET METHODS */
   public void setId(Long id) {
      this.id = id;
   }
   
   public void setClient(User client) {
      this.client = client;
   }
   public void setCategory(Category category) {
      this.category = category;
   }
   public void setTitle(String title) {
      this.title = title;
   }
   public void setShortDescription(String shortDescription) {
      this.shortDescription = shortDescription;
   }
   public void setAddendum(String addendum) {
      this.addendum = addendum;
   }
   public void setCreationDate(Date creationDate) {
      this.creationDate = creationDate;
   }
   public void setLastModificationDate(Date lastModificationDate) {
      this.lastModificationDate = lastModificationDate;
   }
   public void setDiscussions(Set<Discussion> discussions) {
      this.discussions = discussions;
   }
   public void setLocation(Location location){
      this.location = location;
   }
   public void setBudget(Double budget){
      this.budget = budget;
   }
   public void setDeadline(Date deadline){
      this.deadline = deadline;
   }
   public Request(){}
   
   public Request(User client, Category category,String title, String shortDescription,Double budget,Date deadline, String addendum){
      this.client = client;
      this.category = category;
      this.title = title;
      this.shortDescription = shortDescription;
      this.addendum = addendum;
      this.creationDate = new Date();
      this.lastModificationDate = new Date();
      this.budget = budget;
      this.deadline = deadline;
      this.closed = false;
      this.archived = false;
   }
   @Transient
   public String getAnswer() {
      return answer;
   }
   public void setAnswer(String answer) {
      this.answer = answer;
   }
   @Override
   public String toString() {
      return getTitle();
   }
}

FullTextQuery query = em.createFullTextQuery(q, Request.class);