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| package org.dom4j.swing; |
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| import java.io.Serializable; |
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| import java.util.ArrayList; |
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| import java.util.HashMap; |
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| import java.util.Iterator; |
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| import java.util.List; |
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| import java.util.Map; |
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| import org.dom4j.Document; |
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| import org.dom4j.DocumentHelper; |
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| import org.dom4j.Element; |
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| import org.dom4j.XPath; |
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| import org.jaxen.VariableContext; |
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| public class XMLTableDefinition implements Serializable, VariableContext { |
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| private XPath rowXPath; |
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| private List columns = new ArrayList(); |
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| private XMLTableColumnDefinition[] columnArray; |
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| private Map columnNameIndex; |
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| private VariableContext variableContext; |
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| private Object rowValue; |
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| public XMLTableDefinition() {
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| } |
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| public static XMLTableDefinition load(Document definition) {
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| return load(definition.getRootElement());
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| } |
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| public static XMLTableDefinition load(Element definition) {
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| XMLTableDefinition answer = new XMLTableDefinition();
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| answer.setRowExpression(definition.attributeValue("select"));
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| for (Iterator iter = definition.elementIterator("column"); iter
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| .hasNext();) { |
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| Element element = (Element) iter.next();
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| String expression = element.attributeValue("select");
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| String name = element.getText();
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| String typeName = element.attributeValue("type", "string");
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| String columnXPath = element.attributeValue("columnNameXPath");
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| int type = XMLTableColumnDefinition.parseType(typeName);
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| if (columnXPath != null) {
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| answer.addColumnWithXPathName(columnXPath, expression, type);
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| } else { |
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| answer.addColumn(name, expression, type);
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| } |
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| } |
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| return answer;
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| } |
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| public Class getColumnClass(int columnIndex) {
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| return getColumn(columnIndex).getColumnClass();
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| } |
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| public int getColumnCount() {
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| return columns.size();
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| } |
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| public String getColumnName(int columnIndex) {
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| return getColumn(columnIndex).getName();
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| } |
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| public XPath getColumnXPath(int columnIndex) {
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| return getColumn(columnIndex).getXPath();
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| } |
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| public XPath getColumnNameXPath(int columnIndex) {
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| return getColumn(columnIndex).getColumnNameXPath();
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| } |
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| public synchronized Object getValueAt(Object row, int columnIndex) {
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| XMLTableColumnDefinition column = getColumn(columnIndex);
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| Object answer = null;
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| synchronized (this) {
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| this.rowValue = row;
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| answer = column.getValue(row);
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| this.rowValue = null;
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| } |
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| return answer;
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| } |
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| public void addColumn(String name, String expression) {
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| addColumn(name, expression, XMLTableColumnDefinition.OBJECT_TYPE);
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| } |
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| public void addColumn(String name, String expression, int type) {
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| XPath xpath = createColumnXPath(expression);
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| addColumn(new XMLTableColumnDefinition(name, xpath, type));
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| } |
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| public void addColumnWithXPathName(String columnNameXPathExpression,
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| String expression, int type) { |
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| XPath columnNameXPath = createColumnXPath(columnNameXPathExpression);
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| XPath xpath = createColumnXPath(expression);
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| addColumn(new XMLTableColumnDefinition(columnNameXPath, xpath, type));
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| } |
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| public void addStringColumn(String name, String expression) {
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| addColumn(name, expression, XMLTableColumnDefinition.STRING_TYPE);
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| } |
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| public void addNumberColumn(String name, String expression) {
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| addColumn(name, expression, XMLTableColumnDefinition.NUMBER_TYPE);
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| } |
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| public void addColumn(XMLTableColumnDefinition column) {
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| clearCaches();
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| columns.add(column);
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| } |
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| public void removeColumn(XMLTableColumnDefinition column) {
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| clearCaches();
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| columns.remove(column);
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| } |
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| public void clear() {
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| clearCaches();
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| columns.clear();
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| } |
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| public XMLTableColumnDefinition getColumn(int index) {
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| if (columnArray == null) {
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| columnArray = new XMLTableColumnDefinition[columns.size()];
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| columns.toArray(columnArray);
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| } |
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| return columnArray[index];
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| } |
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| public XMLTableColumnDefinition getColumn(String columnName) {
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| if (columnNameIndex == null) {
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| columnNameIndex = new HashMap();
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| for (Iterator it = columns.iterator(); it.hasNext();) {
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| XMLTableColumnDefinition column = (XMLTableColumnDefinition) it
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| .next(); |
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| columnNameIndex.put(column.getName(), column);
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| } |
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| } |
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| return (XMLTableColumnDefinition) columnNameIndex.get(columnName);
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| } |
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| public XPath getRowXPath() {
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| return rowXPath;
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| } |
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| public void setRowXPath(XPath rowXPath) {
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| this.rowXPath = rowXPath;
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| } |
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| public void setRowExpression(String xpath) {
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| setRowXPath(createXPath(xpath));
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| } |
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| public Object getVariableValue(String namespaceURI, String prefix,
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| String localName) { |
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| XMLTableColumnDefinition column = getColumn(localName);
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| if (column != null) {
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| return column.getValue(rowValue);
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| } |
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| return null;
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| } |
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| protected XPath createXPath(String expression) {
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| return DocumentHelper.createXPath(expression);
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| } |
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| protected XPath createColumnXPath(String expression) {
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| XPath xpath = createXPath(expression);
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| xpath.setVariableContext(this);
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| return xpath;
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| } |
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| protected void clearCaches() {
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| columnArray = null;
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| columnNameIndex = null;
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| } |
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| protected void handleException(Exception e) {
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| System.out.println("Caught: " + e);
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| } |
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| } |
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