Table 组件使用指南：动态增加Column

运行环境：JDeveloper 11.1.2.2.0 + Oracle Database 10g Express Edition 10.2.0.1。

本实验来自一个客户的真实需求。
由于种种原因，Table的列在设计时无法确定，因此只能在运行时通过程序动态创建Column。

案例1：Table的前两列固定不变， 其后的列不确定。

（1）页面代码

<af:table var="row" rowBandingInterval="0" id="t1" value="#{viewScope.useCase1MB.rowsData}" varStatus="vs"
          binding="#{viewScope.useCase1MB.useCase1Table}">
    <af:column sortable="true" sortProperty="#{row.id}" headerText="id" id="c1">
        <af:outputText value="#{row.id}" id="ot1"/>
    </af:column>
    <af:column sortable="true" sortProperty="#{row.name}" headerText="Name" id="c2">
        <af:outputText value="#{row.name}" id="ot2"/>
    </af:column>
    <af:forEach begin="0" end="#{viewScope.useCase1MB.numberOfColsToAdd}" varStatus="index">
        <af:column sortable="false" headerText="#{viewScope.useCase1MB.columnsHeader[index.current]}"
                   id="c4">
            <af:outputText value="#{row.columnsData[index.current].cellValue}" id="ot4"/>
            <f:facet name="header">
                <af:outputText value="#{viewScope.useCase1MB.columnsHeader[index.current]}" id="ot3"/>
            </f:facet>
        </af:column>
    </af:forEach>
</af:table>

（2）Managed Bean代码

package view;

import java.util.ArrayList;
import java.util.List;

import model.type.usecase1.ColumnData;
import model.type.usecase1.RowData;

import oracle.adf.model.BindingContext;
import oracle.adf.model.OperationBinding;
import oracle.adf.model.binding.DCBindingContainer;

import oracle.adf.view.rich.component.rich.data.RichTable;

import oracle.binding.BindingContainer;

public class UseCase1ManagedBean {

    private RichTable useCase1Table;

    private List rowsData = new ArrayList();
    private int numberOfColsToAdd = 0;
    private List columnsHeader = new ArrayList();

    public UseCase1ManagedBean() {
        super();
        initData();
    }

    public BindingContainer getBindings() {
        return BindingContext.getCurrent().getCurrentBindingsEntry();
    }

    public void initData() {
        BindingContainer bindings = getBindings();
        oracle.binding.OperationBinding operationBinding = bindings.getOperationBinding("populateTableData");
        rowsData = (List)operationBinding.execute();
        for (int i = 0; i < rowsData.get(0).getColumnsData().size(); i++) {
            columnsHeader.add(rowsData.get(0).getColumnsData().get(i).getHeaderName());
        }

        if (rowsData.get(0).getColumnsData().size() > 0) {
            setNumberOfColsToAdd(rowsData.get(0).getColumnsData().size() - 1);
        }

        // useCase1Table.setColumnResizing("disabled");      
    }

    public void setRowsData(List rowsData) {
        this.rowsData = rowsData;
    }

    public List getRowsData() {
        return rowsData;
    }

    public void setNumberOfColsToAdd(int numberOfColsToAdd) {
        this.numberOfColsToAdd = numberOfColsToAdd;
    }

    public int getNumberOfColsToAdd() {
        return numberOfColsToAdd;
    }

    public void setColumnsHeader(List columnsName) {
        this.columnsHeader = columnsName;
    }

    public List getColumnsHeader() {
        return columnsHeader;
    }

   
    public void setUseCase1Table(RichTable useCase1Table) {
        this.useCase1Table = useCase1Table;
    }

    public RichTable getUseCase1Table() {
        return useCase1Table;
    }
}

（3）运行效果：
初始化Steve的数据，显示Steve's View:

初始化Mark的数据，显示Mark's View:

初始化Kim的数据，显示Kim's View:


案例2：每个Tab中有不确定的Table，每个Table中的列不确定。

（1）页面代码
<af:panelTabbed id="pt1" binding="#{viewScope.useCase2MB.panelTabbed}"/> 
（2）Managed Bean代码

package view;


import java.util.ArrayList;
import java.util.List;


import javax.el.ELContext;
import javax.el.ExpressionFactory;

import javax.el.ValueExpression;

import javax.faces.application.Application;
import javax.faces.component.UIComponent;

import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;

import javax.faces.event.PhaseId;

import model.type.usecase2.ColumnData;
import model.type.usecase2.RowData;
import model.type.usecase2.TableData;
import model.type.usecase2.TabData;


import oracle.adf.model.BindingContext;
import oracle.adf.view.rich.component.rich.RichForm;
import oracle.adf.view.rich.component.rich.data.RichColumn;
import oracle.adf.view.rich.component.rich.data.RichTable;
import oracle.adf.view.rich.component.rich.input.RichChooseDate;
import oracle.adf.view.rich.component.rich.input.RichInputDate;
import oracle.adf.view.rich.component.rich.input.RichInputListOfValues;
import oracle.adf.view.rich.component.rich.input.RichInputText;
import oracle.adf.view.rich.component.rich.layout.RichPanelTabbed;
import oracle.adf.view.rich.component.rich.layout.RichShowDetailItem;
import oracle.adf.view.rich.component.rich.output.RichOutputText;
import oracle.adf.view.rich.context.AdfFacesContext;

import oracle.binding.BindingContainer;

import view.util.JSFUtils;

public class UseCase2ManagedBean {

    private RichTable useCase3Table;

    private List tabsData = new ArrayList();

    private RichPanelTabbed panelTabbed;

    public UseCase2ManagedBean() {
        super();
    }

    public BindingContainer getBindings() {
        return BindingContext.getCurrent().getCurrentBindingsEntry();
    }

    public void beforeRenderResponse(PhaseEvent phaseEvent) {
        if (phaseEvent.getPhaseId() == PhaseId.RENDER_RESPONSE) {
            FacesContext fctx = FacesContext.getCurrentInstance();
            AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance();

            boolean isInitialRender = adfFacesContext.isInitialRender();
            if (isInitialRender) {
                initTabsData();
                initTabsUI();
            }
        }
    }

    public void initTabsUI() {

        List panelTabbedChildren = panelTabbed.getChildren();
        for (int i = 0; i < tabsData.size(); i++) {
            RichShowDetailItem showDetailItem = new RichShowDetailItem();
            showDetailItem.setId("sdi" + (i + 1));
            showDetailItem.setText(tabsData.get(i).getTabName());
            List tablesData = tabsData.get(i).getTablesData();
            for (int j = 0; j < tablesData.size(); j++) {
                RichTable table = new RichTable();
                table.setId("t_" + (i + 1) + "_" + (j + 1));
                table.setVar("row");
                List rowsData = tablesData.get(j).getRowsData();
                table.setValue(rowsData);
                for (int k = 0; k < rowsData.get(0).getColumnsData().size(); k++) {
                    RichColumn column = new RichColumn();
                    column.setId("col_" + (i + 1) + "_" + (j + 1) + "_" + (k + 1));
                    column.setSortable(false);
                    column.setHeaderText(rowsData.get(0).getColumnsData().get(k).getHeaderName());
                    RichOutputText outputText = new RichOutputText();
                    outputText.setId("ot" + (i + 1) + "_" + (j + 1) + "_" + (k + 1));
                    FacesContext fctx = FacesContext.getCurrentInstance();
                    ELContext elctx = fctx.getELContext();
                    Application jsfApp = fctx.getApplication();
                    ExpressionFactory exprFactory = jsfApp.getExpressionFactory();
                    ValueExpression valueExpr =
                        exprFactory.createValueExpression(elctx, "#{row.columnsData[" + k + "].cellValue}",
                                                          Object.class);
                    outputText.setValueExpression("value", valueExpr);
                    column.getChildren().add(outputText);
                    table.getChildren().add(column);
                }
                RichOutputText outputText = new RichOutputText();
                outputText.setId("ot" + (i + 1) + "_" + (j + 1) );
                outputText.setValue(tablesData.get(j).getTableName());
                showDetailItem.getChildren().add(outputText);
                showDetailItem.getChildren().add(table);
            }
            panelTabbedChildren.add(showDetailItem);
        }
    }

    public void initTabsData() {
        BindingContainer bindings = getBindings();
        oracle.binding.OperationBinding operationBinding = bindings.getOperationBinding("populateTabsData");
        tabsData = (List)operationBinding.execute();
    }

    public void setUseCase3Table(RichTable useCase3Table) {
        this.useCase3Table = useCase3Table;
    }

    public RichTable getUseCase3Table() {
        return useCase3Table;
    }

    public void setPanelTabbed(RichPanelTabbed panelTabbed) {
        this.panelTabbed = panelTabbed;
    }

    public RichPanelTabbed getPanelTabbed() {
        return panelTabbed;
    }
}

（3）运行效果



案例3：Table的列不确定，且每个列的显示组件不同。

（1）页面代码
<af:table var="row" rowBandingInterval="0" id="t1" value="#{viewScope.useCase3MB.rowsData}" varStatus="vs"
binding="#{viewScope.useCase3MB.useCase3Table}"/>
（2）Managed Bean代码

package view;


import java.util.ArrayList;
import java.util.List;


import javax.el.ELContext;
import javax.el.ExpressionFactory;

import javax.el.ValueExpression;

import javax.faces.application.Application;
import javax.faces.component.UIComponent;

import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseEvent;

import javax.faces.event.PhaseId;

import model.type.usecase3.ColumnData;
import model.type.usecase3.RowData;

import oracle.adf.model.BindingContext;
import oracle.adf.view.rich.component.rich.RichForm;
import oracle.adf.view.rich.component.rich.data.RichColumn;
import oracle.adf.view.rich.component.rich.data.RichTable;
import oracle.adf.view.rich.component.rich.input.RichChooseDate;
import oracle.adf.view.rich.component.rich.input.RichInputDate;
import oracle.adf.view.rich.component.rich.input.RichInputListOfValues;
import oracle.adf.view.rich.component.rich.input.RichInputText;
import oracle.adf.view.rich.component.rich.output.RichOutputText;
import oracle.adf.view.rich.context.AdfFacesContext;

import oracle.binding.BindingContainer;

import view.util.JSFUtils;

public class UseCase3ManagedBean {

    private RichTable useCase3Table;

    private List rowsData = new ArrayList();

    public UseCase3ManagedBean() {
        super();

    }

    public BindingContainer getBindings() {
        return BindingContext.getCurrent().getCurrentBindingsEntry();
    }

    public void beforeRenderResponse(PhaseEvent phaseEvent) {
        if (phaseEvent.getPhaseId() == PhaseId.RENDER_RESPONSE) {
            FacesContext fctx = FacesContext.getCurrentInstance();
            AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance();

            boolean isInitialRender = adfFacesContext.isInitialRender();
            if (isInitialRender) {
                initTableData();
                initTableUI();
            }
        }
    }

    public void initTableUI() {
        List tableChildren = useCase3Table.getChildren();
        for (int i = 0; i < rowsData.get(0).getColumnsData().size(); i++) {
            RichColumn column = new RichColumn();
            column.setId("col" + (i + 1));
            column.setSortable(false);
            column.setHeaderText(rowsData.get(0).getColumnsData().get(i).getHeaderName());
            FacesContext fctx = FacesContext.getCurrentInstance();
            ELContext elctx = fctx.getELContext();
            Application jsfApp = fctx.getApplication();
            ExpressionFactory exprFactory = jsfApp.getExpressionFactory();
            ValueExpression valueExpr =
                exprFactory.createValueExpression(elctx, "#{row.columnsData[" + i + "].cellValue}", Object.class);
            String columnType = rowsData.get(0).getColumnsData().get(i).getColumnType();
            if (columnType.equals("DATEBOX")) {                
                RichInputDate inputDate = new RichInputDate();
                inputDate.setId("cd" + (i + 1));
                inputDate.setValueExpression("value", valueExpr);
                column.getChildren().add(inputDate);
            } else if (columnType.equals("INPUT_POPUP")) {
                RichInputListOfValues inputLOV = new RichInputListOfValues();
                inputLOV.setId("ilov" + (i + 1));
                inputLOV.setValueExpression("value", valueExpr);
                column.getChildren().add(inputLOV);
                column.setWidth("120");
            } else if (columnType.equals("HIDDEN")) {
                RichOutputText outputText = new RichOutputText();
                outputText.setId("ot" + (i + 1));
                outputText.setValueExpression("value", valueExpr);
                column.getChildren().add(outputText);
                column.setVisible(false);
            } else if (columnType.equals("INPUT_TEXT")) {
                RichInputText inputText = new RichInputText();
                inputText.setId("it" + (i + 1));
                inputText.setValueExpression("value", valueExpr);
                column.getChildren().add(inputText);
            } else {
                RichOutputText outputText = new RichOutputText();
                outputText.setId("ot" + (i + 1));
                outputText.setValueExpression("value", valueExpr);
                column.getChildren().add(outputText);
            }
            tableChildren.add(column);
        }
    }

    public void initTableData() {
        BindingContainer bindings = getBindings();
        oracle.binding.OperationBinding operationBinding = bindings.getOperationBinding("populateTableData");
        rowsData = (List)operationBinding.execute();
    }

    public void setUseCase3Table(RichTable useCase3Table) {
        this.useCase3Table = useCase3Table;
    }

    public RichTable getUseCase3Table() {
        return useCase3Table;
    }

    public void setRowsData(List rowsData) {
        this.rowsData = rowsData;
    }

    public List getRowsData() {
        return rowsData;
    }
}

（3）运行效果