本文整理了Java中org.eclipse.jface.util.Assert.isTrue()方法的一些代码示例，展示了Assert.isTrue()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Assert.isTrue()方法的具体详情如下：
包路径：org.eclipse.jface.util.Assert
类名称：Assert
方法名：isTrue

Assert.isTrue介绍

[英]Asserts that the given boolean is true. If this is not the case, some kind of unchecked exception is thrown.
[中]断言给定的布尔值为true。如果不是这样，则会引发某种未经检查的异常。

代码示例

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.sqleditor

/**
 * Sets the descriptors adornments. Valid values are:</code> WARNING <code>,</code> ERROR <code>,
 * <code>PORTABLE</code>, or any combination of those.
 * 
 * @param adornments the image descritpors adornments
 */
public void setAdornments(int adornments)
{
  Assert.isTrue(adornments >= 0);
  _fFlags = adornments;
}

代码示例来源：origin: org.eclipse/org.eclipse.compare

/**
 * Called whenever a copy operation has been performed on a tree node.
 * This implementation throws an <code>AssertionFailedException</code>
 * since we cannot update a zip archive.
 *
 * @param structure the node for which to save the new content
 * @param input the object from which the structure tree was created in <code>getStructure</code>
 */
public void save(IStructureComparator structure, Object input) {
  Assert.isTrue(false); // Cannot update zip archive
}

代码示例来源：origin: org.eclipse.platform/org.eclipse.jface

/**
 * Asserts that the given boolean is <code>true</code>. If this
 * is not the case, some kind of unchecked exception is thrown.
 *
 * @param expression the outcome of the check
 * @return <code>true</code> if the check passes (does not return
 *    if the check fails)
 */
public static boolean isTrue(boolean expression) {
  // succeed as quickly as possible
  if (expression) {
    return true;
  }
  return isTrue(expression, "");//$NON-NLS-1$
}

代码示例来源：origin: org.eclipse.scout.sdk.deps/org.eclipse.jface

/**
 * Asserts that the given boolean is <code>true</code>. If this
 * is not the case, some kind of unchecked exception is thrown.
 *
 * @param expression the outcome of the check
 * @return <code>true</code> if the check passes (does not return
 *    if the check fails)
 */
public static boolean isTrue(boolean expression) {
  // succeed as quickly as possible
  if (expression) {
    return true;
  }
  return isTrue(expression, "");//$NON-NLS-1$
}

代码示例来源：origin: org.eclipse.rap/org.eclipse.rap.jface

/**
 * Asserts that the given boolean is <code>true</code>. If this
 * is not the case, some kind of unchecked exception is thrown.
 *
 * @param expression the outcome of the check
 * @return <code>true</code> if the check passes (does not return
 *    if the check fails)
 */
public static boolean isTrue(boolean expression) {
  // succeed as quickly as possible
  if (expression) {
    return true;
  }
  return isTrue(expression, "");//$NON-NLS-1$
}

代码示例来源：origin: org.eclipse/org.eclipse.wst.common.ui.properties

/**
 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
 */
public Object[] getElements(Object inputElement) {
  Assert.isTrue(inputElement instanceof ISelection);
    return registry
    .getTabDescriptors(currentPart, (ISelection) inputElement);
}

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.sqleditor

/**
 * Sets the size of the image created by calling <code>createImage()</code>.
 * 
 * @param size the size of the image returned from calling <code>createImage()</code>
 * @see ImageDescriptor#createImage()
 */
public void setImageSize(Point size)
{
  Assert.isNotNull(size);
  Assert.isTrue(size.x >= 0 && size.y >= 0);
  _fSize = size;
}

代码示例来源：origin: org.eclipse/org.eclipse.wst.common.ui.properties

/**
 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer,
 *      java.lang.Object, java.lang.Object)
 */
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  if (tabbedPropertyViewer == null) {
    Assert.isTrue(viewer instanceof TabbedPropertyViewer);
    init((TabbedPropertyViewer) viewer);
  }
}

代码示例来源：origin: org.eclipse/org.eclipse.wst.xsd.ui

protected void setGroups(ActionGroup[] groups) {
  Assert.isTrue(fGroups == null);
  Assert.isNotNull(groups);
  fGroups= groups;        
}

代码示例来源：origin: org.eclipse/org.eclipse.wst.xsd.ui

/**
 * The <code>ComboBoxCellEditor</code> implementation of this
 * <code>CellEditor</code> framework method accepts a zero-based index of a
 * selection.
 * 
 * @param value
 *          the zero-based index of the selection wrapped as an
 *          <code>Integer</code>
 */
protected void doSetValue(Object value)
{
 Assert.isTrue(comboBox != null && (value instanceof Integer));
 selection = ((Integer) value).intValue();
 comboBox.select(selection);
}

代码示例来源：origin: org.eclipse/org.eclipse.jst.j2ee.ui

/**
 * Sorts keys and values in parallel.
 * 
 * @param keys
 *            the keys to use for sorting.
 * @param values
 *            the values associated with the keys.
 */
public void sort(Object[] keys, Object[] values) {
  if ((keys == null) || (values == null)) {
    Assert.isTrue(false, "Either keys or values in null"); //$NON-NLS-1$
    return;
  }
  if (keys.length <= 1)
    return;
  internalSort(keys, values, 0, keys.length - 1);
}

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.common.ui

private Point computeTableSize(Table table)
{
  Point result = table.computeSize(SWT.DEFAULT, SWT.DEFAULT);
  int width = 0;
  int size = _columns.size();
  for (int i = 0; i < size; ++i)
  {
    ColumnLayoutData layoutData = (ColumnLayoutData) _columns.get(i);
    if (layoutData instanceof ColumnPixelData)
    {
      ColumnPixelData col = (ColumnPixelData) layoutData;
      width += col.width;
    }
    else if (layoutData instanceof ColumnWeightData)
    {
      ColumnWeightData col = (ColumnWeightData) layoutData;
      width += col.minimumWidth;
    }
    else
    {
      Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$
    }
  }
  if (width > result.x)
  result.x = width;
  return result;
}

代码示例来源：origin: org.eclipse/org.eclipse.wst.common.ui.properties

/**
 * We do not consider multiple selections. Only the first
 * element will represent the selection.
 */
protected void setSelectionToWidget(List l, boolean reveal) {
  if (l == null || l.size() == 0) { // clear selection
    list.deselectAll();
  } else {
    Object object = l.get(0);
    int index = -1;
    for (int i = 0; i < elements.size(); i++) {
      if (elements.get(i) == object) {
        index = i;
      }
    }
    Assert.isTrue(index != -1, "Could not set the selected tab in the tabbed property viewer");//$NON-NLS-1$
    list.select(index, reveal);
  }
}

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.sqleditor

/**
 * Creates a new SQLImageDescriptor.
 * 
 * @param baseImage an image descriptor used as the base image
 * @param flags flags indicating which adornments are to be rendered. See <code>setAdornments</code> for valid
 *            values.
 * @param size the size of the resulting image
 * @see #setAdornments(int)
 */
public SQLImageDescriptor(ImageDescriptor baseImage, int flags, Point size)
{
  _fBaseImage = baseImage;
  Assert.isNotNull(_fBaseImage);
  _fFlags = flags;
  Assert.isTrue(_fFlags >= 0);
  _fSize = size;
  Assert.isNotNull(_fSize);
}

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.common.ui

public ComboFieldEditor(String name, String labelText, String[][] entryNamesAndValues, Composite parent)
{
  init(name, labelText);
  Assert.isTrue(checkArray(entryNamesAndValues));
  _fEntryNamesAndValues = entryNamesAndValues;
  createControl(parent);
}

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.common.ui

Assert.isTrue(false, "Unknown column layout data"); //$NON-NLS-1$

代码示例来源：origin: org.eclipse/org.eclipse.compare

if (left == null) {
    if (right == null) {
      Assert.isTrue(false);
if (left == null) {
  if (right == null) {
    Assert.isTrue(false);

代码示例来源：origin: org.eclipse/org.eclipse.datatools.sqltools.editor.core

/**
 * Constructs an AbstractControlConnection.
 * 
 * @param manager
 *            {@link EditorCorePlugin#getControlConnectionManager()}
 * @param databaseIdentifier
 *            contains connection profile info and database name
 */
public AbstractControlConnection(IControlConnectionManager manager,
    DatabaseIdentifier databaseIdentifier) {
  Assert.isTrue(manager instanceof ControlConnectionManager);
  this._manager = (ControlConnectionManager) manager;
  this._databaseIdentifier = databaseIdentifier;
  try {
    IConnectionProfile profile = ProfileUtil
        .getProfile(databaseIdentifier.getProfileName());
    IManagedConnection managedConn = profile
        .getManagedConnection("java.sql.Connection");
    _managedConnectionListener = new SQLToolsManagedConnectionListener();
    managedConn.addConnectionListener(_managedConnectionListener);
  } catch (Exception e) {
    EditorCorePlugin.getDefault().log(e);
  }
}