import java.io.InputStream;
import java.util.ArrayList;
+import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
+import java.util.TreeMap;
import jxl.Cell;
import jxl.FormulaCell;
+import jxl.JXLException;
import jxl.Sheet;
import jxl.Workbook;
+import org.apache.commons.io.IOUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.argeo.server.ArgeoServerException;
+import org.argeo.server.dao.LightDaoSupport;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.beans.factory.generic.GenericBeanFactoryAccessor;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.core.io.Resource;
+import org.springframework.util.StringUtils;
-public class JxlDaoSupport {
+public class JxlDaoSupport implements LightDaoSupport, ApplicationContextAware,
+ InitializingBean {
private final static Log log = LogFactory.getLog(JxlDaoSupport.class);
private ClassLoader classLoader = getClass().getClassLoader();
+ private ApplicationContext applicationContext;
- private Map<Class, Map<Object, Object>> model = new HashMap<Class, Map<Object, Object>>();
+ private Map<Class<?>, Map<Object, Object>> model = new HashMap<Class<?>, Map<Object, Object>>();
- public void load(InputStream in) {
+ private Map<String, Object> externalRefs = new HashMap<String, Object>();
+
+ private List<String> scannedPackages = new ArrayList<String>();
+
+ private List<Resource> workbooks = new ArrayList<Resource>();
+
+ public void afterPropertiesSet() throws Exception {
+ for (Resource res : workbooks) {
+ InputStream in = null;
+ try {
+ in = res.getInputStream();
+ load(in);
+ } finally {
+ IOUtils.closeQuietly(in);
+ }
+ }
+ }
+
+ public void load(InputStream in) {
try {
// used to resolve inner references
Map<String, List<Object>> tempRefs = new HashMap<String, List<Object>>();
- List<Link> links = new ArrayList<Link>();
+
+ List<Reference> references = new ArrayList<Reference>();
Workbook workbook = Workbook.getWorkbook(in);
for (Sheet sheet : workbook.getSheets()) {
- if (log.isDebugEnabled())
- log
- .debug("Instantiate objects of sheet "
- + sheet.getName());
-
- Cell[] firstRow = sheet.getRow(0);
-
- // TODO: ability to map sheet names and class names
- String className = sheet.getName();
- Class<?> clss = classLoader.loadClass(className);
- model.put(clss, new HashMap<Object, Object>());
-
- tempRefs.put(sheet.getName(), new ArrayList<Object>());
-
- String keyProperty = firstRow[0].getContents();
- for (int i = 1; i < sheet.getRows(); i++) {
- if (log.isTraceEnabled())
- log.trace(" row " + i);
-
- Cell[] currentRow = sheet.getRow(i);
- BeanWrapper bw = new BeanWrapperImpl(clss);
- for (int j = 0; j < firstRow.length; j++) {
- String pName = firstRow[j].getContents();
-
- Cell cell = currentRow[j];
- if (cell instanceof FormulaCell) {
- String formula = ((FormulaCell) cell).getFormula();
- int index = formula.indexOf('!');
- String targetSheet = formula.substring(0, index);
- // assume no double letters
- Integer targetRow = Integer.parseInt(formula
- .substring(index + 2));
- links.add(new Link(bw.getWrappedInstance(), pName,
- targetSheet, targetRow));
-
- if (log.isTraceEnabled())
- log.debug(" formula: " + formula
- + " | content: " + cell.getContents()
- + " | targetSheet=" + targetSheet
- + ", targetRow=" + targetRow);
- } else {
- bw.setPropertyValue(pName, cell.getContents());
-
- if (log.isTraceEnabled())
- log.debug(" " + pName + "="
- + cell.getContents());
- }
- }// properties set
-
- model.get(clss).put(bw.getPropertyValue(keyProperty),
- bw.getWrappedInstance());
- tempRefs.get(sheet.getName()).add(bw.getWrappedInstance());
- }
-
- if (log.isDebugEnabled())
- log.debug(model.get(clss).size() + " objects of type "
- + clss);
+ loadSheet(sheet, references, tempRefs);
}
- if (log.isDebugEnabled())
- log.debug("Link " + links.size() + " references");
- for (Link link : links) {
- BeanWrapper bw = new BeanWrapperImpl(link.object);
- Object targetObject = tempRefs.get(link.getTargetSheet()).get(
- link.targetRow - 2);
- bw.setPropertyValue(link.property, targetObject);
+ for (Reference ref : references) {
+ injectReference(ref, tempRefs);
}
+ if (log.isDebugEnabled())
+ log.debug(references.size() + " references linked");
} catch (Exception e) {
throw new ArgeoServerException("Cannot load workbook", e);
}
}
+ protected void loadSheet(Sheet sheet, List<Reference> references,
+ Map<String, List<Object>> tempRefs) throws JXLException {
+ if (log.isTraceEnabled())
+ log.debug("Instantiate sheet " + sheet.getName());
+
+ Cell[] firstRow = sheet.getRow(0);
+
+ Class<?> clss = findClassToInstantiate(sheet);
+ model.put(clss, new TreeMap<Object, Object>());
+
+ tempRefs.put(sheet.getName(), new ArrayList<Object>());
+
+ String keyProperty = firstRow[0].getContents();
+ for (int row = 1; row < sheet.getRows(); row++) {
+ if (log.isTraceEnabled())
+ log.trace(" row " + row);
+
+ Cell[] currentRow = sheet.getRow(row);
+ BeanWrapper bw = new BeanWrapperImpl(clss);
+ cells: for (int col = 0; col < firstRow.length; col++) {
+ String pName = firstRow[col].getContents();
+
+ if (col < currentRow.length) {
+ Cell cell = currentRow[col];
+ if (overrideCell(cell, bw, pName, keyProperty, row,
+ references, tempRefs))
+ continue cells;
+ loadCell(cell, bw, pName, keyProperty, row, references);
+ }
+ }// cells
+
+ model.get(clss).put(bw.getPropertyValue(keyProperty),
+ bw.getWrappedInstance());
+ tempRefs.get(sheet.getName()).add(bw.getWrappedInstance());
+ }
+
+ if (log.isDebugEnabled())
+ log.debug(model.get(clss).size() + " objects of type " + clss
+ + " instantiated");
+
+ }
+
+ protected void loadCell(Cell cell, BeanWrapper bw, String propertyName,
+ String keyProperty, Integer row, List<Reference> references)
+ throws JXLException {
+
+ if (cell instanceof FormulaCell) {
+ String formula = ((FormulaCell) cell).getFormula();
+ int index = formula.indexOf('!');
+ String targetSheet = formula.substring(0, index);
+ // assume no double letters!!
+ String targetRowStr = formula.substring(index + 2);
+ if (targetRowStr.charAt(0) == '$')
+ targetRowStr = targetRowStr.substring(1);
+ Integer targetRow = Integer.parseInt(targetRowStr);
+ references.add(new Reference(bw.getWrappedInstance(), propertyName,
+ targetSheet, targetRow));
+
+ if (log.isTraceEnabled())
+ log.debug(" formula: " + formula + " | content: "
+ + cell.getContents() + " | targetSheet=" + targetSheet
+ + ", targetRow=" + targetRow);
+ } else {
+ String contents = cell.getContents();
+ if (propertyName.equals(keyProperty)
+ && !StringUtils.hasText(contents)) {
+ // auto allocate key column if empty
+ contents = Integer.toString(row);
+ }
+
+ if (propertyName.charAt(0) == '#') {// externalRef
+ references.add(new Reference(bw.getWrappedInstance(),
+ propertyName.substring(1), contents));
+ } else {
+ bw.setPropertyValue(propertyName, contents);
+ }
+
+ if (log.isTraceEnabled())
+ log.debug(" " + propertyName + "=" + contents);
+ }
+
+ }
+
+ /** Returns true if property was set (thus bypassing standard process). */
+ protected Boolean overrideCell(Cell cell, BeanWrapper bw,
+ String propertyName, String keyProperty, Integer row,
+ List<Reference> references, Map<String, List<Object>> tempRefs) {
+ return false;
+ }
+
+ protected void injectReference(Reference reference,
+ Map<String, List<Object>> tempRefs) {
+ BeanWrapper bw = new BeanWrapperImpl(reference.object);
+ Object targetObject;
+ if (reference.getExternalRef() != null) {
+ String ref = reference.getExternalRef();
+ if (externalRefs.containsKey(ref))
+ targetObject = externalRefs.get(ref);
+ else if (applicationContext != null)
+ targetObject = applicationContext.getBean(ref);
+ else {
+ targetObject = null;
+ log.warn("Ref " + ref + " not found");
+ }
+ } else {
+ targetObject = tempRefs.get(reference.getTargetSheet()).get(
+ reference.targetRow - 2);
+ }
+ bw.setPropertyValue(reference.property, targetObject);
+
+ }
+
+ protected Class<?> findClassToInstantiate(Sheet sheet) {
+ // TODO: ability to map sheet names and class names
+ String className = sheet.getName();
+ Class<?> clss = null;
+ try {
+ clss = classLoader.loadClass(className);
+ return clss;
+ } catch (ClassNotFoundException e) {
+ // silent
+ }
+
+ scannedPkgs: for (String pkg : scannedPackages) {
+ try {
+ clss = classLoader.loadClass(pkg.trim() + "." + className);
+ break scannedPkgs;
+ } catch (ClassNotFoundException e) {
+ // silent
+ if (log.isTraceEnabled())
+ log.trace(e.getMessage());
+ }
+ }
+
+ if (clss == null)
+ throw new ArgeoServerException("Cannot find a class for sheet "
+ + sheet.getName());
+
+ return clss;
+ }
+
@SuppressWarnings("unchecked")
public <T> T getByKey(Class<T> clss, Object key) {
- return (T) model.get(clss).get(key);
+ return (T) model.get(findClass(clss)).get(key);
+ }
+
+ /**
+ * Slow.
+ *
+ * @return the first found
+ */
+ public <T> T getByField(Class<T> clss, String field, Object value) {
+ List<T> all = list(clss, null);
+ T res = null;
+ for (T obj : all) {
+ if (new BeanWrapperImpl(obj).getPropertyValue(field).equals(value)) {
+ res = obj;
+ break;
+ }
+ }
+ return res;
+ }
+
+ @SuppressWarnings("unchecked")
+ public <T> List<T> list(Class<T> clss, Object filter) {
+ List<T> res = new ArrayList<T>();
+
+ Class classToUse = findClass(clss);
+ if (classToUse != null)
+ res.addAll((Collection<T>) model.get(classToUse).values());
+
+ if (applicationContext != null)
+ res.addAll(new GenericBeanFactoryAccessor(applicationContext)
+ .getBeansOfType(clss).values());
+
+ return res;
+ }
+
+ @SuppressWarnings("unchecked")
+ protected Class findClass(Class parent) {
+ if (model.containsKey(parent))
+ return parent;
+
+ for (Class clss : model.keySet()) {
+ if (parent.isAssignableFrom(clss))
+ return clss;// return the first found
+ }
+ return null;
}
- public static class Link {
+ public void setApplicationContext(ApplicationContext applicationContext)
+ throws BeansException {
+ this.applicationContext = applicationContext;
+ }
+
+ public void setExternalRefs(Map<String, Object> externalRefs) {
+ this.externalRefs = externalRefs;
+ }
+
+ public Map<String, Object> getExternalRefs() {
+ return externalRefs;
+ }
+
+ public void setScannedPackages(List<String> scannedPackages) {
+ this.scannedPackages = scannedPackages;
+ }
+
+ public List<String> getScannedPackages() {
+ return scannedPackages;
+ }
+
+ public void setWorkbooks(List<Resource> workbooks) {
+ this.workbooks = workbooks;
+ }
+
+ public List<Resource> getWorkbooks() {
+ return workbooks;
+ }
+
+ public void setClassLoader(ClassLoader classLoader) {
+ this.classLoader = classLoader;
+ }
+
+ public static class Reference {
private Object object;
private String property;
private String targetSheet;
private Integer targetRow;
+ private String externalRef;
- public Link(Object object, String property, String targetSheet,
+ public Reference(Object object, String property, String targetSheet,
Integer targetRow) {
- super();
this.object = object;
this.property = property;
this.targetSheet = targetSheet;
this.targetRow = targetRow;
}
+ public Reference(Object object, String property, String externalRef) {
+ this.object = object;
+ this.property = property;
+ this.externalRef = externalRef;
+ }
+
public Object getObject() {
return object;
}
return targetRow;
}
+ public String getExternalRef() {
+ return externalRef;
+ }
+
}
}
projects / lgpl / argeo-commons.git / blobdiff