org.beangle.ems.dictionary.service.impl.SeqCodeGenerator.java Source code

Introduction

Here is the source code for org.beangle.ems.dictionary.service.impl.SeqCodeGenerator.java

Source

/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.ems.dictionary.service.impl;

import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.apache.commons.lang.math.NumberUtils;
import org.beangle.commons.collection.CollectUtils;
import org.beangle.model.Entity;
import org.beangle.model.persist.EntityDao;
import org.beangle.model.query.builder.OqlBuilder;
import org.beangle.model.util.EntityUtils;
import org.beangle.ems.dictionary.model.CodeScript;
import org.beangle.ems.dictionary.service.CodeFixture;

/**
 * @author chaostone
 * @version $Id: SeqCodeGenerator.java May 5, 2011 3:57:11 PM chaostone $
 */

public class SeqCodeGenerator extends ScriptCodeGenerator {

    public static final String SEQ = "seq";

    private EntityDao entityDao;

    public void setUp() throws Exception {
        // seq??
        interpreter.set("seq", SEQ);
        interpreter.set("dao", entityDao);
    }

    protected CodeScript getCodeScript(String entityName) {
        OqlBuilder<CodeScript> builder = OqlBuilder.from(CodeScript.class, "codeScript");
        builder.where("codeScript.codeClassName=:codeClassName", entityName);
        builder.cacheable();
        List<CodeScript> scripts = entityDao.search(builder);
        if (scripts.size() != 1) {
            return null;
        } else {
            return scripts.get(0);
        }
    }

    /**
     * ???
     */
    @SuppressWarnings("unchecked")
    public String gen(CodeFixture fixture) {
        // ??
        String script = fixture.getScript();
        CodeScript codeScript = null;
        if (null == script) {
            codeScript = getCodeScript(EntityUtils.getEntityClassName(fixture.getEntity().getClass()));
            if (null == codeScript) {
                return null;
            }
            script = codeScript.getScript();
            try {
                String code = (String) PropertyUtils.getProperty(fixture.getEntity(), codeScript.getAttr());
                if (isValidCode(code)) {
                    return code;
                }
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
        }
        int seqLength = -1;
        // ???seq[x]
        if (StringUtils.contains(script, SEQ)) {
            seqLength = NumberUtils.toInt(StringUtils.substringBetween(script, SEQ + "[", "]"));

            script = StringUtils.replace(script,
                    SEQ + "[" + StringUtils.substringBetween(script, SEQ + "[", "]") + "]", SEQ);
        }
        fixture.setScript(script);
        String code = super.gen(fixture);
        List<String> seqs = CollectUtils.newArrayList();
        if (-1 != seqLength) {
            try {
                OqlBuilder<?> builder = OqlBuilder.from(Class.forName(codeScript.getCodeClassName()), "entity");
                builder.select("select substr(entity." + codeScript.getAttr() + "," + (code.indexOf(SEQ) + 1) + ","
                        + seqLength + ")");
                builder.where(" entity." + codeScript.getAttr() + " like :codeExample",
                        StringUtils.replace(code, SEQ, "%"));
                builder.where("length(entity." + codeScript.getAttr() + ")="
                        + (code.length() - SEQ.length() + seqLength));
                seqs = (List<String>) entityDao.search(builder);
                Collections.sort(seqs);
            } catch (Exception e) {
                throw new RuntimeException(e);
            }
            synchronized (this) {
                int newSeqNo = 0;
                for (Iterator<String> iter = seqs.iterator(); iter.hasNext();) {
                    String seqNo = iter.next();
                    if (NumberUtils.toInt(seqNo) - newSeqNo >= 2) {
                        break;
                    } else {
                        newSeqNo = NumberUtils.toInt(seqNo);
                    }
                }
                newSeqNo++;
                String seqNo = String.valueOf(newSeqNo);
                if (0 != seqLength) {
                    seqNo = StringUtils.repeat("0", seqLength - seqNo.length()) + newSeqNo;
                }
                code = StringUtils.replace(code, SEQ, seqNo);
            }
        }
        return code;
    }

    public String test(CodeFixture fixture, CodeScript codeScript) {
        try {
            Class<?> codeClass = Class.forName(codeScript.getCodeClassName());
            Entity<?> entity = (Entity<?>) codeClass.newInstance();
            PropertyUtils.getProperty(entity, codeScript.getAttr());
            if (null != fixture) {
                for (Iterator<?> iter = fixture.getParams().keySet().iterator(); iter.hasNext();) {
                    String param = (String) iter.next();
                    interpreter.set(param, fixture.getParams().get(param));
                }
                if (StringUtils.isNotEmpty(fixture.getScript())) {
                    interpreter.eval(fixture.getScript());
                }
            }
            return gen(new CodeFixture(entity, codeScript.getScript()));
        } catch (Exception e) {
            return ExceptionUtils.getFullStackTrace(e);
        }
    }

    public void setEntityDao(EntityDao entityDao) {
        this.entityDao = entityDao;
    }
}