Mercurial > dive4elements > river
annotate flys-backend/src/main/java/de/intevation/flys/model/WstColumnValue.java @ 5779:ebec12def170
Datacage: Add a pool of builders to make it multi threadable.
XML DOM is not thread safe. Therefore the old implementation only allowed one thread
to use the builder at a time. As the complexity of the configuration
has increased over time this has become a bottleneck of the whole application
because it took quiet some time to build a result. Furthermore the builder code path
is visited very frequent. So many concurrent requests were piled up
resulting in long waits for the users.
To mitigate this problem a round robin pool of builders is used now.
Each of the pooled builders has an independent copy of the XML template
and can be run in parallel.
The number of builders is determined by the system property
'flys.datacage.pool.size'. It defaults to 4.
author | Sascha L. Teichmann <teichmann@intevation.de> |
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date | Sun, 21 Apr 2013 12:48:09 +0200 |
parents | 29a408f80a89 |
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1 package de.intevation.flys.model; |
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2 |
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3 import java.math.BigDecimal; |
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4 |
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5 import java.io.Serializable; |
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6 |
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7 import javax.persistence.Entity; |
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8 import javax.persistence.Id; |
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9 import javax.persistence.Table; |
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10 import javax.persistence.GeneratedValue; |
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11 import javax.persistence.Column; |
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12 import javax.persistence.SequenceGenerator; |
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13 import javax.persistence.GenerationType; |
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14 import javax.persistence.OneToOne; |
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15 import javax.persistence.JoinColumn; |
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16 |
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17 @Entity |
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18 @Table(name = "wst_column_values") |
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19 public class WstColumnValue |
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20 implements Serializable |
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21 { |
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22 private Integer id; |
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23 private WstColumn wstColumn; |
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24 private BigDecimal position; |
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25 private BigDecimal w; |
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26 |
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27 public WstColumnValue() { |
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28 } |
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29 |
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30 public WstColumnValue( |
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31 WstColumn wstColumn, |
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32 BigDecimal position, |
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33 BigDecimal w |
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34 ) { |
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35 this.wstColumn = wstColumn; |
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36 this.position = position; |
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37 this.w = w; |
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38 } |
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39 |
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40 @Id |
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41 @SequenceGenerator( |
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42 name = "SEQUENCE_WST_COLUMN_VALUES_ID_SEQ", |
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43 sequenceName = "WST_COLUMN_VALUES_ID_SEQ", |
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44 allocationSize = 1) |
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45 @GeneratedValue( |
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46 strategy = GenerationType.SEQUENCE, |
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47 generator = "SEQUENCE_WST_COLUMN_VALUES_ID_SEQ") |
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48 @Column(name = "id") |
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49 public Integer getId() { |
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50 return id; |
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51 } |
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52 |
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53 public void setId(Integer id) { |
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54 this.id = id; |
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55 } |
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56 |
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57 @OneToOne |
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58 @JoinColumn(name = "wst_column_id") |
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59 public WstColumn getWstColumn() { |
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60 return wstColumn; |
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61 } |
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62 |
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63 public void setWstColumn(WstColumn wstColumn) { |
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64 this.wstColumn = wstColumn; |
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65 } |
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66 |
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67 @Column(name = "position") // FIXME: type mapping needed? |
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68 public BigDecimal getPosition() { |
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69 return position; |
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70 } |
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71 |
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72 public void setPosition(BigDecimal position) { |
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73 this.position = position; |
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74 } |
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75 |
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76 @Column(name = "w") // FIXME: type mapping needed? |
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77 public BigDecimal getW() { |
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78 return w; |
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79 } |
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80 |
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81 public void setW(BigDecimal w) { |
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82 this.w = w; |
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83 } |
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84 } |
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85 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |