Java tutorial
/* * Copyright (C) 2014 Chingo247 * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package com.chingo247.structureapi.plan.holograms; import com.chingo247.structureapi.exception.StructureDataException; import com.chingo247.structureapi.plan.document.Validator; import com.chingo247.structureapi.util.Elements; import com.chingo247.structureapi.util.Nodes; import java.util.List; import org.dom4j.Element; import org.dom4j.Node; /** * * @author Chingo */ public class StructureHologramValidator extends Validator { public StructureHologramValidator() { super(Nodes.HOLOGRAMS_NODE); } @Override public void validate(Element e) throws StructureDataException { List<Node> nodes = e.selectNodes(Nodes.HOLOGRAM_NODE); if (nodes != null && !nodes.isEmpty()) { int count = 0; for (Node n : nodes) { Node xNode = n.selectSingleNode(Elements.X); Node yNode = n.selectSingleNode(Elements.Y); Node zNode = n.selectSingleNode(Elements.Z); if (xNode == null) { throw new StructureDataException("Missing 'X' node for 'Hologram#" + count + "'"); } if (yNode == null) { throw new StructureDataException("Missing 'Y' node for 'Hologram#" + count + "'"); } if (zNode == null) { throw new StructureDataException("Missing 'Z' node for 'Hologram#" + count + "'"); } try { Integer.parseInt(xNode.getText()); } catch (NumberFormatException nfe) { throw new StructureDataException("Invalid X value should 'Hologram#" + count + "'"); } try { Integer.parseInt(yNode.getText()); } catch (NumberFormatException nfe) { throw new StructureDataException("Invalid Y value for 'Hologram#" + count + "'"); } try { Integer.parseInt(zNode.getText()); } catch (NumberFormatException nfe) { throw new StructureDataException("Invalid Z value for 'Hologram#" + count + "'"); } Node linesNode = n.selectSingleNode("Lines"); if (linesNode == null) { throw new StructureDataException("Missing 'Lines' node for 'Hologram#" + count + "'"); } List<Node> lineNodes = n.selectNodes("Lines/Line"); if (lineNodes == null || lineNodes.isEmpty()) { throw new StructureDataException("Missing 'Line' nodes for 'Hologram#" + count + "'"); } count++; } } } }