From a0b170f2c02850bb8e82b1b13c34a4fde9a6dcca Mon Sep 17 00:00:00 2001 From: Mathieu Baudier Date: Tue, 6 Oct 2009 08:41:12 +0000 Subject: [PATCH] Make JXL DAO support more robust and extensible git-svn-id: https://svn.argeo.org/commons/trunk@3000 4cfe0d0a-d680-48aa-b62c-e0a02a3f76cc --- .../org/argeo/server/jxl/dao/JxlDaoSheet.java | 5 - .../argeo/server/jxl/dao/JxlDaoSupport.java | 246 +++++++++++------- 2 files changed, 156 insertions(+), 95 deletions(-) delete mode 100644 server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSheet.java diff --git a/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSheet.java b/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSheet.java deleted file mode 100644 index 307d3b9ba..000000000 --- a/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSheet.java +++ /dev/null @@ -1,5 +0,0 @@ -package org.argeo.server.jxl.dao; - -public class JxlDaoSheet { - private Class targetClass; -} diff --git a/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSupport.java b/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSupport.java index 834de39f6..0960b6c42 100644 --- a/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSupport.java +++ b/server/runtime/org.argeo.server.jxl/src/main/java/org/argeo/server/jxl/dao/JxlDaoSupport.java @@ -9,6 +9,7 @@ import java.util.Map; import jxl.Cell; import jxl.FormulaCell; +import jxl.JXLException; import jxl.Sheet; import jxl.Workbook; @@ -32,114 +33,171 @@ public class JxlDaoSupport implements ApplicationContextAware { private Map externalRefs = new HashMap(); - public void load(InputStream in) { + private List scannedPackages = new ArrayList(); + public void load(InputStream in) { try { // used to resolve inner references Map> tempRefs = new HashMap>(); - List links = new ArrayList(); + + List references = new ArrayList(); Workbook workbook = Workbook.getWorkbook(in); for (Sheet sheet : workbook.getSheets()) { - if (log.isTraceEnabled()) - log.debug("Instantiate 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()); - - tempRefs.put(sheet.getName(), new ArrayList()); - - 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); - for (int col = 0; col < firstRow.length; col++) { - String pName = firstRow[col].getContents(); - - Cell cell = currentRow[col]; - 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); - links.add(new Reference(bw.getWrappedInstance(), - pName, targetSheet, targetRow)); - - if (log.isTraceEnabled()) - log.debug(" formula: " + formula - + " | content: " + cell.getContents() - + " | targetSheet=" + targetSheet - + ", targetRow=" + targetRow); - } else { - String contents = cell.getContents(); - if (pName.equals(keyProperty) - && !StringUtils.hasText(contents)) { - // auto allocate key column if empty - contents = Integer.toString(row); - } - - if (pName.charAt(0) == '#') {// externalRef - links.add(new Reference( - bw.getWrappedInstance(), pName - .substring(1), contents)); - } else { - bw.setPropertyValue(pName, contents); - } - - if (log.isTraceEnabled()) - log.debug(" " + pName + "=" + contents); - } - }// 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 + " instantiated"); + loadSheet(sheet, references, tempRefs); } - for (Reference link : links) { - BeanWrapper bw = new BeanWrapperImpl(link.object); - Object targetObject; - if (link.getExternalRef() != null) { - String ref = link.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(link.getTargetSheet()).get( - link.targetRow - 2); - } - bw.setPropertyValue(link.property, targetObject); + for (Reference ref : references) { + injectReference(ref, tempRefs); } if (log.isDebugEnabled()) - log.debug(links.size() + " references linked"); + log.debug(references.size() + " references linked"); } catch (Exception e) { throw new ArgeoServerException("Cannot load workbook", e); } } + protected void loadSheet(Sheet sheet, List references, + Map> 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 HashMap()); + + tempRefs.put(sheet.getName(), new ArrayList()); + + 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 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 references, Map> tempRefs) { + return false; + } + + protected void injectReference(Reference reference, + Map> 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 + "." + className); + break scannedPkgs; + } catch (ClassNotFoundException e) { + // silent + } + } + + if (clss == null) + throw new ArgeoServerException("Cannot find a class for sheet " + + sheet.getName()); + + return clss; + } + @SuppressWarnings("unchecked") public T getByKey(Class clss, Object key) { return (T) model.get(findClass(clss)).get(key); @@ -177,6 +235,14 @@ public class JxlDaoSupport implements ApplicationContextAware { return externalRefs; } + public void setScannedPackages(List scannedPackages) { + this.scannedPackages = scannedPackages; + } + + public List getScannedPackages() { + return scannedPackages; + } + public static class Reference { private Object object; private String property; -- 2.30.2