Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/exports/AxisSection.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 | ca8997aa683e |
children |
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package de.intevation.flys.exports; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import de.intevation.artifactdatabase.state.Attribute; /** * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public class AxisSection extends TypeSection { public static final String IDENTIFIER_ATTR = "id"; public static final String LABEL_ATTR = "label"; public static final String FONTSIZE_ATTR = "font-size"; public static final String FIXATION_ATTR = "fixation"; public static final String UPPERRANGE_ATTR = "upper"; public static final String LOWERRANGE_ATTR = "lower"; public AxisSection() { super("axis"); } public void setIdentifier(String identifier) { setStringValue(IDENTIFIER_ATTR, identifier); } public String getIdentifier() { return getStringValue(IDENTIFIER_ATTR); } public void setLabel(String label) { setStringValue(LABEL_ATTR, label); } public String getLabel() { return getStringValue(LABEL_ATTR); } public void setFontSize(int fontSize) { if (fontSize <= 0) { return; } setIntegerValue(FONTSIZE_ATTR, fontSize); } public Integer getFontSize() { return getIntegerValue(FONTSIZE_ATTR); } public void setFixed(boolean fixed) { setBooleanValue(FIXATION_ATTR, fixed); } public Boolean isFixed() { return getBooleanValue(FIXATION_ATTR); } public void setUpperRange(double upperRange) { setDoubleValue(UPPERRANGE_ATTR, upperRange); } public Double getUpperRange() { return getDoubleValue(UPPERRANGE_ATTR); } public void setLowerRange(double lowerRange) { setDoubleValue(LOWERRANGE_ATTR, lowerRange); } public Double getLowerRange() { return getDoubleValue(LOWERRANGE_ATTR); } @Override public void toXML(Node parent) { Document owner = parent.getOwnerDocument(); Element axis = owner.createElement("axis"); parent.appendChild(axis); for (String key: getKeys()) { Attribute attr = getAttribute(key); attr.toXML(axis); } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :