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POHow to set converter properties for each row of a datatable?
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copied!<p>I have created a custom ISO date time <code>Converter</code>:</p> <pre><code>public class IsoDateTimeConverter implements Converter, StateHolder { private Class type; private String pattern; private boolean transientValue = false; public void setType(Class type) { this.type = type; } public void setPattern(String pattern) { this.pattern = pattern; } @Override public Object getAsObject(FacesContext context, UIComponent component, String value) throws ConverterException { if (StringCheck.isNullOrEmpty(value)) { throw new ConverterException("value not specified"); } try { if (IsoDate.class.equals(type)) { if (WebConst.ISO_DATE_NONE.equals(value)) { return IsoDate.DUMMY; } else { //TODO User spezifische TimeZone auslesen return new IsoDate(value, TimeZone.getDefault().getID()); } } else if (IsoTime.class.equals(type)) { if (WebConst.ISO_TIME_NONE.equals(value)) { return IsoTime.DUMMY; } else { //TODO User spezifische TimeZone auslesen return new IsoTime(value, TimeZone.getDefault().getID()); } } else if (IsoTimestamp.class.equals(type)) { if (WebConst.ISO_TIMESTAMP_NONE.equals(value)) { return IsoTimestamp.DUMMY; } else { //TODO User spezifische TimeZone auslesen return new IsoTimestamp(value, TimeZone.getDefault().getID()); } } else { throw new ConverterException("value not convertible"); } } catch (Exception e) { throw new ConverterException(e.getMessage()); } } @Override public String getAsString(FacesContext context, UIComponent component, Object value) throws ConverterException { if (value == null) { throw new ConverterException("value not specified"); } if (IsoDate.class.equals(value)) { IsoDate isoDate = (IsoDate) value; if (isoDate.isDummy()) { return WebConst.ISO_DATE_NONE; } else { //TODO User spezifische TimeZone auslesen return isoDate.toString(pattern, TimeZone.getDefault().getID(), false); } } else if (IsoTime.class.equals(value)) { IsoTime isoTime = (IsoTime) value; if (isoTime.isDummy()) { return WebConst.ISO_TIME_NONE; } else { //TODO User spezifische TimeZone auslesen return isoTime.toString(pattern, TimeZone.getDefault().getID(), false); } } else if (IsoTimestamp.class.equals(value)) { IsoTimestamp isoTimestamp = (IsoTimestamp) value; if (isoTimestamp.isDummy()) { return WebConst.ISO_TIMESTAMP_NONE; } else { //TODO User spezifische TimeZone auslesen return isoTimestamp.toString(pattern, TimeZone.getDefault().getID(), false); } } else { throw new ConverterException("value not convertible"); } } @Override public Object saveState(FacesContext context) { return new Object[]{type, pattern}; } @Override public void restoreState(FacesContext context, Object state) { type = (Class) ((Object[]) state)[0]; pattern = (String) ((Object[]) state)[1]; } @Override public boolean isTransient() { return transientValue; } @Override public void setTransient(boolean transientValue) { this.transientValue = transientValue; } } </code></pre> <p>And I use the <code>Converter</code> as <code><mh:IsoDateTimeConverter></code> in the following view:</p> <pre><code><p:dataTable value="#{imports.list}" var="item"> <p:column> <h:outputText value="#{item.balanceDate}" immediate="true"> <mh:IsoDateTimeConverter type="#{webConst.ISO_DATE_CLASS}" pattern="#{webConst.ISO_DATE_FORMAT}"/> </h:outputText> </p:column> </p:dataTable> </code></pre> <p>The problem is, when I first open this view, all properties are set in my <code>Converter</code> class only once and then the datatable renders and converts the values based on initial properties.</p> <p>I expected that the properties are set on a per-row basis. How can I achieve this?</p>

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