Java IFormElement.getChildren方法代码示例

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
/**
 * This method does a recursive check of whether there are any repeat guesses
 * in the element or its subtree. This is a necessary step when initializing
 * the model to be able to identify whether new repeats can be used.
 *
 * @param parent The form element to begin checking
 * @return true if the element or any of its descendants is a repeat
 * which has a count guess, false otherwise.
 */
   private boolean containsRepeatGuesses(IFormElement parent) {
	if(parent instanceof GroupDef) {
		GroupDef g = (GroupDef)parent;
		if (g.getRepeat() && g.getCountReference() != null) {
			return true;
		}
	}

   	List<IFormElement> children = parent.getChildren();
   	if(children == null) { return false; }
      for (IFormElement child : children) {
   		if(containsRepeatGuesses(child)) {return true;}
   	}
   	return false;
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
/**
 * This method does a recursive check of whether there are any repeat guesses
 * in the element or its subtree. This is a necessary step when initializing
 * the model to be able to identify whether new repeats can be used.
 *
 * @param parent The form element to begin checking
 * @return true if the element or any of its descendants is a repeat
 * which has a count guess, false otherwise.
 */
private boolean containsRepeatGuesses(IFormElement parent) {
    if (parent instanceof GroupDef) {
        GroupDef g = (GroupDef)parent;
        if (g.getRepeat() && g.getCountReference() != null) {
            return true;
        }
    }

    Vector<IFormElement> children = parent.getChildren();
    if (children == null) {
        return false;
    }
    for (Enumeration en = children.elements(); en.hasMoreElements(); ) {
        if (containsRepeatGuesses((IFormElement)en.nextElement())) {
            return true;
        }
    }
    return false;
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
/**
 * This method does a recursive check of whether there are any repeat guesses
 * in the element or its subtree. This is a necessary step when initializing
 * the model to be able to identify whether new repeats can be used.
 *
 * @param parent The form element to begin checking
 * @return true if the element or any of its descendants is a repeat
 * which has a count guess, false otherwise.
 */
private boolean containsRepeatGuesses(IFormElement parent) {
    if (parent instanceof GroupDef) {
        GroupDef g = (GroupDef)parent;
        if (g.isRepeat() && g.getCountReference() != null) {
            return true;
        }
    }

    Vector<IFormElement> children = parent.getChildren();
    if (children == null) {
        return false;
    }
    for (Enumeration en = children.elements(); en.hasMoreElements(); ) {
        if (containsRepeatGuesses((IFormElement)en.nextElement())) {
            return true;
        }
    }
    return false;
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyControlBindings (IFormElement fe, FormInstance instance, List<String> errors) { //throws XmlPullParserException {
	if (fe.getChildren() == null)
		return;

	for (int i = 0; i < fe.getChildren().size(); i++) {
		IFormElement child = fe.getChildren().get(i);
		IDataReference ref = null;
		String type = null;

		if (child instanceof GroupDef) {
			ref = ((GroupDef)child).getBind();
			type = (((GroupDef)child).getRepeat() ? "Repeat" : "Group");
		} else if (child instanceof QuestionDef) {
			ref = ((QuestionDef)child).getBind();
			type = "Question";
		}
		TreeReference tref = FormInstance.unpackReference(ref);

		if (child instanceof QuestionDef && tref.size() == 0) {
			//group can bind to '/'; repeat can't, but that's checked above
			reporter.warning(XFormParserReporter.TYPE_INVALID_STRUCTURE, "Cannot bind control to '/'",null);
		} else {
           List<TreeReference> nodes = new EvaluationContext(instance).expandReference(tref, true);
			if (nodes.size() == 0) {
				String error = type+ " bound to non-existent node: [" + tref.toString() + "]";
				reporter.error(error);
				errors.add(error);
			}
			//we can't check whether questions map to the right kind of node ('data' node vs. 'sub-tree' node) as that depends
			//on the question's data type, which we don't know yet
		}

		verifyControlBindings(child, instance, errors);
	}
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyControlBindings(IFormElement fe, FormInstance instance, Vector<String> errors) { //throws XmlPullParserException {
    if (fe.getChildren() == null)
        return;

    for (int i = 0; i < fe.getChildren().size(); i++) {
        IFormElement child = fe.getChildren().elementAt(i);
        XPathReference ref = null;
        String type = null;

        if (child instanceof GroupDef) {
            ref = child.getBind();
            type = (((GroupDef)child).getRepeat() ? "Repeat" : "Group");
        } else if (child instanceof QuestionDef) {
            ref = child.getBind();
            type = "Question";
        }
        TreeReference tref = FormInstance.unpackReference(ref);

        if (child instanceof QuestionDef && tref.size() == 0) {
            //group can bind to '/'; repeat can't, but that's checked above
            reporter.warning(XFormParserReporter.TYPE_INVALID_STRUCTURE, "Cannot bind control to '/'", null);
        } else {
            Vector<TreeReference> nodes = new EvaluationContext(instance).expandReference(tref, true);
            if (nodes.size() == 0) {
                String error = type + " bound to non-existent node: [" + tref.toString() + "]";
                reporter.error(error);
                errors.addElement(error);
            }
            //we can't check whether questions map to the right kind of node ('data' node vs. 'sub-tree' node) as that depends
            //on the question's data type, which we don't know yet
        }

        verifyControlBindings(child, instance, errors);
    }
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyControlBindings(IFormElement fe, FormInstance instance, Vector<String> errors) { //throws XmlPullParserException {
    if (fe.getChildren() == null)
        return;

    for (int i = 0; i < fe.getChildren().size(); i++) {
        IFormElement child = fe.getChildren().elementAt(i);
        XPathReference ref = null;
        String type = null;

        if (child instanceof GroupDef) {
            ref = child.getBind();
            type = (((GroupDef)child).isRepeat() ? "Repeat" : "Group");
        } else if (child instanceof QuestionDef) {
            ref = child.getBind();
            type = "Question";
        }
        TreeReference tref = FormInstance.unpackReference(ref);

        if (child instanceof QuestionDef && tref.size() == 0) {
            //group can bind to '/'; repeat can't, but that's checked above
            reporter.warning(XFormParserReporter.TYPE_INVALID_STRUCTURE, "Cannot bind control to '/'", null);
        } else {
            Vector<TreeReference> nodes = new EvaluationContext(instance).expandReference(tref, true);
            if (nodes.size() == 0) {
                String error = type + " bound to non-existent node: [" + tref.toString() + "]";
                reporter.error(error);
                errors.addElement(error);
            }
            //we can't check whether questions map to the right kind of node ('data' node vs. 'sub-tree' node) as that depends
            //on the question's data type, which we don't know yet
        }

        verifyControlBindings(child, instance, errors);
    }
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void decrementHelper(List<Integer> indexes, List<Integer> multiplicities, List<IFormElement> elements) {
	int i = indexes.size() - 1;

	if (i != -1) {
		int curIndex = indexes.get(i).intValue();
		int curMult = multiplicities.get(i).intValue();

		if (repeatStructure == REPEAT_STRUCTURE_NON_LINEAR &&
			elements.get(elements.size() - 1) instanceof GroupDef && ((GroupDef)elements.get(elements.size() - 1)).getRepeat() &&
			multiplicities.get(multiplicities.size() - 1).intValue() != TreeReference.INDEX_REPEAT_JUNCTURE) {
			multiplicities.set(i, Integer.valueOf(TreeReference.INDEX_REPEAT_JUNCTURE));
			return;
		} else if (repeatStructure != REPEAT_STRUCTURE_NON_LINEAR && curMult > 0) {
			multiplicities.set(i, Integer.valueOf(curMult - 1));
		} else if (curIndex > 0) {
			// set node to previous element
			indexes.set(i, Integer.valueOf(curIndex - 1));
			multiplicities.set(i, Integer.valueOf(0));
			elements.set(i, (i == 0 ? form : elements.get(i - 1)).getChild(curIndex - 1));

			if (setRepeatNextMultiplicity(elements, multiplicities))
				return;
		} else {
			// at absolute beginning of current level; index to parent
			indexes.remove(i);
			multiplicities.remove(i);
			elements.remove(i);
			return;
		}
	}

	IFormElement element = (i < 0 ? form : elements.get(i));
	while (!(element instanceof QuestionDef)) {
		if(element.getChildren() == null || element.getChildren().size() == 0) {
			//if there are no children we just return the current index (the group itself)
			return;
		}
		int subIndex = element.getChildren().size() - 1;
		element = element.getChild(subIndex);

		indexes.add(Integer.valueOf(subIndex));
		multiplicities.add(Integer.valueOf(0));
		elements.add(element);

		if (setRepeatNextMultiplicity(elements, multiplicities))
			return;
	}
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyRepeatMemberBindings (IFormElement fe, FormInstance instance, GroupDef parentRepeat) {
	if (fe.getChildren() == null)
		return;

	for (int i = 0; i < fe.getChildren().size(); i++) {
		IFormElement child = fe.getChildren().get(i);
		boolean isRepeat = (child instanceof GroupDef && ((GroupDef)child).getRepeat());

		//get bindings of current node and nearest enclosing repeat
		TreeReference repeatBind = (parentRepeat == null ? TreeReference.rootRef() : FormInstance.unpackReference(parentRepeat.getBind()));
		TreeReference childBind = FormInstance.unpackReference(child.getBind());

		//check if current binding is within scope of repeat binding
		if (!repeatBind.isParentOf(childBind, false)) {
			//catch <repeat nodeset="/a/b"><input ref="/a/c" /></repeat>: repeat question is not a child of the repeated node
			throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is not a descendant of <repeat> binding [" + repeatBind.toString() + "]!");
		} else if (repeatBind.equals(childBind) && isRepeat) {
			//catch <repeat nodeset="/a/b"><repeat nodeset="/a/b">...</repeat></repeat> (<repeat nodeset="/a/b"><input ref="/a/b" /></repeat> is ok)
			throw new XFormParseException("child <repeat>s [" + childBind.toString() + "] cannot bind to the same node as their parent <repeat>; only questions/groups can");
		}

		//check that, in the instance, current node is not within the scope of any closer repeat binding
		//build a list of all the node's instance ancestors
		List<TreeElement> repeatAncestry = new ArrayList<TreeElement>();
		TreeElement repeatNode = (repeatTree == null ? null : repeatTree.getRoot());
		if (repeatNode != null) {
			repeatAncestry.add(repeatNode);
			for (int j = 1; j < childBind.size(); j++) {
				repeatNode = repeatNode.getChild(childBind.getName(j), 0);
				if (repeatNode != null) {
					repeatAncestry.add(repeatNode);
				} else {
					break;
				}
			}
		}
		//check that no nodes between the parent repeat and the target are repeatable
		for (int k = repeatBind.size(); k < childBind.size(); k++) {
			TreeElement rChild = (k < repeatAncestry.size() ? repeatAncestry.get(k) : null);
			boolean repeatable = (rChild == null ? false : rChild.isRepeatable());
			if (repeatable && !(k == childBind.size() - 1 && isRepeat)) {
				//catch <repeat nodeset="/a/b"><input ref="/a/b/c/d" /></repeat>...<repeat nodeset="/a/b/c">...</repeat>:
				//  question's/group's/repeat's most immediate repeat parent in the instance is not its most immediate repeat parent in the form def
				throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is within the scope of a <repeat> that is not its closest containing <repeat>!");
			}
		}

		verifyRepeatMemberBindings(child, instance, (isRepeat ? (GroupDef)child : parentRepeat));
	}
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyRepeatMemberBindings(IFormElement fe, FormInstance instance, GroupDef parentRepeat) {
    if (fe.getChildren() == null)
        return;

    for (int i = 0; i < fe.getChildren().size(); i++) {
        IFormElement child = fe.getChildren().elementAt(i);
        boolean isRepeat = (child instanceof GroupDef && ((GroupDef)child).getRepeat());

        //get bindings of current node and nearest enclosing repeat
        TreeReference repeatBind = (parentRepeat == null ? TreeReference.rootRef() : FormInstance.unpackReference(parentRepeat.getBind()));
        TreeReference childBind = FormInstance.unpackReference(child.getBind());

        //check if current binding is within scope of repeat binding
        if (!repeatBind.isParentOf(childBind, false)) {
            //catch <repeat nodeset="/a/b"><input ref="/a/c" /></repeat>: repeat question is not a child of the repeated node
            throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is not a descendant of <repeat> binding [" + repeatBind.toString() + "]!");
        } else if (repeatBind.equals(childBind) && isRepeat) {
            //catch <repeat nodeset="/a/b"><repeat nodeset="/a/b">...</repeat></repeat> (<repeat nodeset="/a/b"><input ref="/a/b" /></repeat> is ok)
            throw new XFormParseException("child <repeat>s [" + childBind.toString() + "] cannot bind to the same node as their parent <repeat>; only questions/groups can");
        }

        //check that, in the instance, current node is not within the scope of any closer repeat binding
        //build a list of all the node's instance ancestors
        Vector<TreeElement> repeatAncestry = new Vector<TreeElement>();
        TreeElement repeatNode = (repeatTree == null ? null : repeatTree.getRoot());
        if (repeatNode != null) {
            repeatAncestry.addElement(repeatNode);
            for (int j = 1; j < childBind.size(); j++) {
                repeatNode = repeatNode.getChild(childBind.getName(j), 0);
                if (repeatNode != null) {
                    repeatAncestry.addElement(repeatNode);
                } else {
                    break;
                }
            }
        }
        //check that no nodes between the parent repeat and the target are repeatable
        for (int k = repeatBind.size(); k < childBind.size(); k++) {
            TreeElement rChild = (k < repeatAncestry.size() ? repeatAncestry.elementAt(k) : null);
            boolean repeatable = (rChild != null && rChild.isRepeatable());
            if (repeatable && !(k == childBind.size() - 1 && isRepeat)) {
                //catch <repeat nodeset="/a/b"><input ref="/a/b/c/d" /></repeat>...<repeat nodeset="/a/b/c">...</repeat>:
                //  question's/group's/repeat's most immediate repeat parent in the instance is not its most immediate repeat parent in the form def
                throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is within the scope of a <repeat> that is not its closest containing <repeat>!");
            }
        }

        verifyRepeatMemberBindings(child, instance, (isRepeat ? (GroupDef)child : parentRepeat));
    }
}
 

import org.javarosa.core.model.IFormElement; //导入方法依赖的package包/类
private void verifyRepeatMemberBindings(IFormElement fe, FormInstance instance, GroupDef parentRepeat) {
    if (fe.getChildren() == null)
        return;

    for (int i = 0; i < fe.getChildren().size(); i++) {
        IFormElement child = fe.getChildren().elementAt(i);
        boolean isRepeat = (child instanceof GroupDef && ((GroupDef)child).isRepeat());

        //get bindings of current node and nearest enclosing repeat
        TreeReference repeatBind = (parentRepeat == null ? TreeReference.rootRef() : FormInstance.unpackReference(parentRepeat.getBind()));
        TreeReference childBind = FormInstance.unpackReference(child.getBind());

        //check if current binding is within scope of repeat binding
        if (!repeatBind.isParentOf(childBind, false)) {
            //catch <repeat nodeset="/a/b"><input ref="/a/c" /></repeat>: repeat question is not a child of the repeated node
            throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is not a descendant of <repeat> binding [" + repeatBind.toString() + "]!");
        } else if (repeatBind.equals(childBind) && isRepeat) {
            //catch <repeat nodeset="/a/b"><repeat nodeset="/a/b">...</repeat></repeat> (<repeat nodeset="/a/b"><input ref="/a/b" /></repeat> is ok)
            throw new XFormParseException("child <repeat>s [" + childBind.toString() + "] cannot bind to the same node as their parent <repeat>; only questions/groups can");
        }

        //check that, in the instance, current node is not within the scope of any closer repeat binding
        //build a list of all the node's instance ancestors
        Vector<TreeElement> repeatAncestry = new Vector<>();
        TreeElement repeatNode = (repeatTree == null ? null : repeatTree.getRoot());
        if (repeatNode != null) {
            repeatAncestry.addElement(repeatNode);
            for (int j = 1; j < childBind.size(); j++) {
                repeatNode = repeatNode.getChild(childBind.getName(j), 0);
                if (repeatNode != null) {
                    repeatAncestry.addElement(repeatNode);
                } else {
                    break;
                }
            }
        }
        //check that no nodes between the parent repeat and the target are repeatable
        for (int k = repeatBind.size(); k < childBind.size(); k++) {
            TreeElement rChild = (k < repeatAncestry.size() ? repeatAncestry.elementAt(k) : null);
            boolean repeatable = (rChild != null && rChild.isRepeatable());
            if (repeatable && !(k == childBind.size() - 1 && isRepeat)) {
                //catch <repeat nodeset="/a/b"><input ref="/a/b/c/d" /></repeat>...<repeat nodeset="/a/b/c">...</repeat>:
                //  question's/group's/repeat's most immediate repeat parent in the instance is not its most immediate repeat parent in the form def
                throw new XFormParseException("<repeat> member's binding [" + childBind.toString() + "] is within the scope of a <repeat> that is not its closest containing <repeat>!");
            }
        }

        verifyRepeatMemberBindings(child, instance, (isRepeat ? (GroupDef)child : parentRepeat));
    }
}