How to get value from h:outputText which is inside p:repeat element

I am trying to get values from the outputText component which is inside the repeat component:

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

For this, I'm using exportFunction. Below is an example code:





import java.util.List;

import java.util.Map;

import javax.enterprise.context.ApplicationScoped;

import javax.faces.component.UIComponent;

import javax.faces.component.ValueHolder;

import javax.faces.context.FacesContext;

import javax.inject.Named;

import org.apache.commons.lang3.StringUtils;

import org.primefaces.component.api.UIColumn;

import org.primefaces.component.repeat.UIRepeat;

import org.primefaces.util.ComponentUtils;



@Named

@ApplicationScoped

public class ColumnExporter {



    public String export(final UIColumn column) {

        String value = StringUtils.EMPTY;

        for (final UIComponent child : column.getChildren())

            value += buildValue(child);

        return value;

    }



    private String buildValue(final UIComponent uiComponent) {

        if (uiComponent.isRendered()) {

            if (uiComponent instanceof ValueHolder) {

                return ComponentUtils.getValueToRender(FacesContext.getCurrentInstance(), uiComponent);

            } else if (uiComponent instanceof UIRepeat) {

                UIRepeat repeat = (UIRepeat) uiComponent;

                return buildRepeatValue(repeat);

            } else if (uiComponent.getChildCount() > 0) {

                String value = "";

                for (UIComponent child : uiComponent.getChildren()) {

                    value += buildValue(child);

                }

                return value;

            }

        }

        return "";

    }



    private String buildRepeatValue(UIRepeat repeat) {

        String value = "";

        String variableName = repeat.getVar();

        String statusName = repeat.getVarStatus();

        List<?> values = (List) repeat.getValueExpression("value")

                .getValue(FacesContext.getCurrentInstance().getELContext());

        for (Object valueObj : values) {

            for (UIComponent child : repeat.getChildren()) {

                String childValue = buildValue(child);

                if (StringUtils.isNotEmpty(childValue)) {

                    value += childValue + "n";

                }

            }

        }

        return value;

    }

}

But I always get the NULL value despite the fact that this value is correctly displayed in the table.
Does anyone know how to properly retrieve this value from the outputText element?

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

Tried not* using a p:datatable and a ui:repeat? Does it work then?
– Kukeltje
Nov 21 '18 at 18:42

Works without ui:repeat - I can get value from outputText
– user3654104
Nov 22 '18 at 7:58

With ui:repeat (instead of p:repeat)
– Kukeltje
Nov 22 '18 at 9:19

It does not change anything. I understand that the problem is that in ui:repeat component there really only exists one outputText element for many values. How do you get these values if you do not find in this item?
– user3654104
Nov 22 '18 at 21:12

add a comment |

I am trying to get values from the outputText component which is inside the repeat component:

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

For this, I'm using exportFunction. Below is an example code:





import java.util.List;

import java.util.Map;

import javax.enterprise.context.ApplicationScoped;

import javax.faces.component.UIComponent;

import javax.faces.component.ValueHolder;

import javax.faces.context.FacesContext;

import javax.inject.Named;

import org.apache.commons.lang3.StringUtils;

import org.primefaces.component.api.UIColumn;

import org.primefaces.component.repeat.UIRepeat;

import org.primefaces.util.ComponentUtils;



@Named

@ApplicationScoped

public class ColumnExporter {



    public String export(final UIColumn column) {

        String value = StringUtils.EMPTY;

        for (final UIComponent child : column.getChildren())

            value += buildValue(child);

        return value;

    }



    private String buildValue(final UIComponent uiComponent) {

        if (uiComponent.isRendered()) {

            if (uiComponent instanceof ValueHolder) {

                return ComponentUtils.getValueToRender(FacesContext.getCurrentInstance(), uiComponent);

            } else if (uiComponent instanceof UIRepeat) {

                UIRepeat repeat = (UIRepeat) uiComponent;

                return buildRepeatValue(repeat);

            } else if (uiComponent.getChildCount() > 0) {

                String value = "";

                for (UIComponent child : uiComponent.getChildren()) {

                    value += buildValue(child);

                }

                return value;

            }

        }

        return "";

    }



    private String buildRepeatValue(UIRepeat repeat) {

        String value = "";

        String variableName = repeat.getVar();

        String statusName = repeat.getVarStatus();

        List<?> values = (List) repeat.getValueExpression("value")

                .getValue(FacesContext.getCurrentInstance().getELContext());

        for (Object valueObj : values) {

            for (UIComponent child : repeat.getChildren()) {

                String childValue = buildValue(child);

                if (StringUtils.isNotEmpty(childValue)) {

                    value += childValue + "n";

                }

            }

        }

        return value;

    }

}

But I always get the NULL value despite the fact that this value is correctly displayed in the table.
Does anyone know how to properly retrieve this value from the outputText element?

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

Tried not* using a p:datatable and a ui:repeat? Does it work then?
– Kukeltje
Nov 21 '18 at 18:42

Works without ui:repeat - I can get value from outputText
– user3654104
Nov 22 '18 at 7:58

With ui:repeat (instead of p:repeat)
– Kukeltje
Nov 22 '18 at 9:19

It does not change anything. I understand that the problem is that in ui:repeat component there really only exists one outputText element for many values. How do you get these values if you do not find in this item?
– user3654104
Nov 22 '18 at 21:12

add a comment |

I am trying to get values from the outputText component which is inside the repeat component:

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

For this, I'm using exportFunction. Below is an example code:





import java.util.List;

import java.util.Map;

import javax.enterprise.context.ApplicationScoped;

import javax.faces.component.UIComponent;

import javax.faces.component.ValueHolder;

import javax.faces.context.FacesContext;

import javax.inject.Named;

import org.apache.commons.lang3.StringUtils;

import org.primefaces.component.api.UIColumn;

import org.primefaces.component.repeat.UIRepeat;

import org.primefaces.util.ComponentUtils;



@Named

@ApplicationScoped

public class ColumnExporter {



    public String export(final UIColumn column) {

        String value = StringUtils.EMPTY;

        for (final UIComponent child : column.getChildren())

            value += buildValue(child);

        return value;

    }



    private String buildValue(final UIComponent uiComponent) {

        if (uiComponent.isRendered()) {

            if (uiComponent instanceof ValueHolder) {

                return ComponentUtils.getValueToRender(FacesContext.getCurrentInstance(), uiComponent);

            } else if (uiComponent instanceof UIRepeat) {

                UIRepeat repeat = (UIRepeat) uiComponent;

                return buildRepeatValue(repeat);

            } else if (uiComponent.getChildCount() > 0) {

                String value = "";

                for (UIComponent child : uiComponent.getChildren()) {

                    value += buildValue(child);

                }

                return value;

            }

        }

        return "";

    }



    private String buildRepeatValue(UIRepeat repeat) {

        String value = "";

        String variableName = repeat.getVar();

        String statusName = repeat.getVarStatus();

        List<?> values = (List) repeat.getValueExpression("value")

                .getValue(FacesContext.getCurrentInstance().getELContext());

        for (Object valueObj : values) {

            for (UIComponent child : repeat.getChildren()) {

                String childValue = buildValue(child);

                if (StringUtils.isNotEmpty(childValue)) {

                    value += childValue + "n";

                }

            }

        }

        return value;

    }

}

But I always get the NULL value despite the fact that this value is correctly displayed in the table.
Does anyone know how to properly retrieve this value from the outputText element?

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

I am trying to get values from the outputText component which is inside the repeat component:

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

For this, I'm using exportFunction. Below is an example code:





import java.util.List;

import java.util.Map;

import javax.enterprise.context.ApplicationScoped;

import javax.faces.component.UIComponent;

import javax.faces.component.ValueHolder;

import javax.faces.context.FacesContext;

import javax.inject.Named;

import org.apache.commons.lang3.StringUtils;

import org.primefaces.component.api.UIColumn;

import org.primefaces.component.repeat.UIRepeat;

import org.primefaces.util.ComponentUtils;



@Named

@ApplicationScoped

public class ColumnExporter {



    public String export(final UIColumn column) {

        String value = StringUtils.EMPTY;

        for (final UIComponent child : column.getChildren())

            value += buildValue(child);

        return value;

    }



    private String buildValue(final UIComponent uiComponent) {

        if (uiComponent.isRendered()) {

            if (uiComponent instanceof ValueHolder) {

                return ComponentUtils.getValueToRender(FacesContext.getCurrentInstance(), uiComponent);

            } else if (uiComponent instanceof UIRepeat) {

                UIRepeat repeat = (UIRepeat) uiComponent;

                return buildRepeatValue(repeat);

            } else if (uiComponent.getChildCount() > 0) {

                String value = "";

                for (UIComponent child : uiComponent.getChildren()) {

                    value += buildValue(child);

                }

                return value;

            }

        }

        return "";

    }



    private String buildRepeatValue(UIRepeat repeat) {

        String value = "";

        String variableName = repeat.getVar();

        String statusName = repeat.getVarStatus();

        List<?> values = (List) repeat.getValueExpression("value")

                .getValue(FacesContext.getCurrentInstance().getELContext());

        for (Object valueObj : values) {

            for (UIComponent child : repeat.getChildren()) {

                String childValue = buildValue(child);

                if (StringUtils.isNotEmpty(childValue)) {

                    value += childValue + "n";

                }

            }

        }

        return value;

    }

}

But I always get the NULL value despite the fact that this value is correctly displayed in the table.
Does anyone know how to properly retrieve this value from the outputText element?

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

<p:dataTable>

...

<p:column sortBy="#{row.trainnumber}" style="text-align: right; text-overflow: ellipsis; width: 80px" exportFunction="#{columnExporter.export}">

    <f:facet name="header">

        <h:outputText value="Zugnr." title="Zugnummer" />

    </f:facet>



    <p:repeat var="item" value="#{row.values}" varStatus="aendStatus">

        <h:outputText  value="#{item.trainnumber}" />

        <h:outputText value="&lt;br /&gt;" escape="false" rendered="#{!someValue.last}" />

    </p:repeat>

</p:column>

</p:dataTable>

jsf primefaces

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

edited Nov 21 '18 at 18:41

Kukeltje

8,78441338

asked Nov 21 '18 at 13:59

user3654104

asked Nov 21 '18 at 13:59

user3654104

asked Nov 21 '18 at 13:59

user3654104

Tried not* using a p:datatable and a ui:repeat? Does it work then?
– Kukeltje
Nov 21 '18 at 18:42

Works without ui:repeat - I can get value from outputText
– user3654104
Nov 22 '18 at 7:58

With ui:repeat (instead of p:repeat)
– Kukeltje
Nov 22 '18 at 9:19

It does not change anything. I understand that the problem is that in ui:repeat component there really only exists one outputText element for many values. How do you get these values if you do not find in this item?
– user3654104
Nov 22 '18 at 21:12

add a comment |

Tried not* using a p:datatable and a ui:repeat? Does it work then?
– Kukeltje
Nov 21 '18 at 18:42

Works without ui:repeat - I can get value from outputText
– user3654104
Nov 22 '18 at 7:58

With ui:repeat (instead of p:repeat)
– Kukeltje
Nov 22 '18 at 9:19

It does not change anything. I understand that the problem is that in ui:repeat component there really only exists one outputText element for many values. How do you get these values if you do not find in this item?
– user3654104
Nov 22 '18 at 21:12

Tried not* using a p:datatable and a ui:repeat? Does it work then?
– Kukeltje
Nov 21 '18 at 18:42

Works without ui:repeat - I can get value from outputText
– user3654104
Nov 22 '18 at 7:58

With ui:repeat (instead of p:repeat)
– Kukeltje
Nov 22 '18 at 9:19

It does not change anything. I understand that the problem is that in ui:repeat component there really only exists one outputText element for many values. How do you get these values if you do not find in this item?
– user3654104
Nov 22 '18 at 21:12

add a comment |

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