Java tutorial
/** * DataCleaner (community edition) * Copyright (C) 2013 Human Inference * * This copyrighted material is made available to anyone wishing to use, modify, * copy, or redistribute it subject to the terms and conditions of the GNU * Lesser General Public License, as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License * for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this distribution; if not, write to: * Free Software Foundation, Inc. * 51 Franklin Street, Fifth Floor * Boston, MA 02110-1301 USA */ package org.eobjects.datacleaner.monitor.scheduling.widgets; import java.util.Date; import java.util.List; import org.eobjects.datacleaner.monitor.scheduling.SchedulingServiceAsync; import org.eobjects.datacleaner.monitor.scheduling.model.ScheduleDefinition; import org.eobjects.datacleaner.monitor.shared.model.DCUserInputException; import org.eobjects.datacleaner.monitor.shared.model.JobIdentifier; import org.eobjects.datacleaner.monitor.shared.model.TenantIdentifier; import org.eobjects.datacleaner.monitor.util.DCAsyncCallback; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Element; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.FocusEvent; import com.google.gwt.event.dom.client.FocusHandler; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.i18n.client.DateTimeFormat; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.MultiWordSuggestOracle; import com.google.gwt.user.client.ui.RadioButton; import com.google.gwt.user.client.ui.SuggestBox; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.user.datepicker.client.DateBox; /** * Panel used to customize the schedule expression of a * {@link ScheduleDefinition}. */ public class CustomizeSchedulePanel extends Composite { interface MyUiBinder extends UiBinder<Widget, CustomizeSchedulePanel> { } private static MyUiBinder uiBinder = GWT.create(MyUiBinder.class); private final ScheduleDefinition _schedule; @UiField RadioButton periodicTriggerRadio; @UiField(provided = true) SuggestBox periodicTriggerExpressionTextBox; @UiField RadioButton dependentTriggerRadio; @UiField ListBox dependentTriggerJobListBox; @UiField RadioButton manualTriggerRadio; @UiField RadioButton oneTimeTriggerRadio; @UiField DateBox dateBox; private final SchedulingServiceAsync _service; private final TenantIdentifier _tenant; private Date serverDate; private String serverDateAsString; public CustomizeSchedulePanel(SchedulingServiceAsync service, TenantIdentifier tenant, ScheduleDefinition schedule) { super(); _service = service; _tenant = tenant; _schedule = schedule; _service.getServerDate(new DCAsyncCallback<String>() { @Override public void onSuccess(String result) { serverDateAsString = result; serverDate = DateTimeFormat.getFormat("yyyy-MM-dd HH:mm:ss").parse(serverDateAsString); } }); MultiWordSuggestOracle suggestions = new MultiWordSuggestOracle(); suggestions.add("@yearly"); suggestions.add("@monthly"); suggestions.add("@weekly"); suggestions.add("@daily"); suggestions.add("@hourly"); suggestions.add("@minutely"); periodicTriggerExpressionTextBox = new SuggestBox(suggestions); periodicTriggerExpressionTextBox.getValueBox().addFocusHandler(new FocusHandler() { @Override public void onFocus(FocusEvent event) { periodicTriggerRadio.setValue(true); Element elementById = DOM.getElementById("periodicErrorMessage"); if (periodicTriggerExpressionTextBox.getText().equals("")) { elementById.setInnerHTML("Specify cron expression for periodic scheduling"); } else { elementById.setInnerHTML(""); } } }); initWidget(uiBinder.createAndBindUi(this)); dateBox.setFormat(new DateBox.DefaultFormat(DateTimeFormat.getFormat("yyyy-MM-dd HH:mm:ss"))); dateBox.getDatePicker().setWidth("200px"); dateBox.getTextBox().addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { oneTimeTriggerRadio.setValue(true); Element elementByIdForDate = DOM.getElementById("serverDate"); elementByIdForDate.setInnerHTML("Server Time : " + serverDateAsString); } }); dateBox.getTextBox().addChangeHandler(new ChangeHandler() { @Override public void onChange(ChangeEvent event) { Element elementById = DOM.getElementById("errorMessage"); if (dateBox.getValue() == null) { elementById.setInnerHTML("Select date for one time schedule"); } else { Date scheduleDate = dateBox.getValue(); elementById.setInnerHTML(""); if (scheduleDate.before(serverDate)) { elementById.setInnerHTML("Past date can not be selected for one time schedule"); } else { elementById.setInnerHTML(""); } } } }); oneTimeTriggerRadio.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { Element elementById = DOM.getElementById("errorMessage"); Element elementByIdForDate = DOM.getElementById("serverDate"); elementByIdForDate.setInnerHTML("Server Time : " + serverDateAsString); if (dateBox.getValue() == null) { elementById.setInnerHTML("Select date for one time schedule"); } } }); dateBox.addValueChangeHandler(new ValueChangeHandler<Date>() { @Override public void onValueChange(ValueChangeEvent<Date> event) { Date scheduleDate = dateBox.getValue(); Element elementById = DOM.getElementById("errorMessage"); elementById.setInnerHTML(""); if (scheduleDate.before(serverDate)) { elementById.setInnerHTML("Past date can not be selected for one time schedule"); } else { elementById.setInnerHTML(""); } } }); final String expression = _schedule.getCronExpression(); final JobIdentifier scheduleAfterJob = _schedule.getDependentJob(); final String expressionForOneTime = _schedule.getDateForOneTimeSchedule(); if (expression != null) { periodicTriggerRadio.setValue(true); periodicTriggerExpressionTextBox.setText(expression); } else if (expressionForOneTime != null) { oneTimeTriggerRadio.setValue(true); dateBox.getTextBox().setValue(expressionForOneTime); } else if (scheduleAfterJob != null) { dependentTriggerRadio.setValue(true); dependentTriggerJobListBox.addItem(scheduleAfterJob.getName()); dependentTriggerJobListBox.setSelectedIndex(0); } else { manualTriggerRadio.setValue(true); } dependentTriggerJobListBox.addFocusHandler(new FocusHandler() { @Override public void onFocus(FocusEvent event) { dependentTriggerRadio.setValue(true); } }); _service.getDependentJobCandidates(_tenant, _schedule, new DCAsyncCallback<List<JobIdentifier>>() { @Override public void onSuccess(List<JobIdentifier> result) { for (JobIdentifier jobIdentifier : result) { final String jobName = jobIdentifier.getName(); if (scheduleAfterJob != null && jobName.equals(scheduleAfterJob.getName())) { // already added } else { dependentTriggerJobListBox.addItem(jobName); } } } }); } public ScheduleDefinition getUpdatedSchedule() { _schedule.setCronExpression(null); _schedule.setDependentJob(null); _schedule.setDateForOneTimeSchedule(null); if (periodicTriggerRadio.getValue()) { if (periodicTriggerExpressionTextBox.getText().equals("")) { throw new DCUserInputException("Please specify a cron expression for periodic scheduling"); } else { _schedule.setCronExpression(periodicTriggerExpressionTextBox.getText()); } } if (oneTimeTriggerRadio.getValue()) { if (dateBox.getValue() == null) { throw new DCUserInputException("Please select a date for one time scheduling"); } else { Date scheduleDate = dateBox.getValue(); if (scheduleDate.before(serverDate)) { throw new DCUserInputException("Past date cannot be selected.Please select a date in future"); } else { _schedule.setDateForOneTimeSchedule(dateBox.getTextBox().getText()); } } } if (dependentTriggerRadio.getValue()) { final int index = dependentTriggerJobListBox.getSelectedIndex(); final String dependentJobName = dependentTriggerJobListBox.getValue(index); _schedule.setDependentJob(new JobIdentifier(dependentJobName)); } return _schedule; } }