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java jpa tool for spring

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package sf.database.template.freemarker.ext;

import freemarker.core.Environment;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import sf.database.template.TemplateConstants;
import sf.database.template.freemarker.FreemarkerHelp;
import sf.spring.util.CollectionUtils;
import sf.tools.StringUtils;

import java.util.List;
import java.util.Map;

public class ParaModel implements TemplateMethodModelEx {
    @Override
    public Object exec(List arguments) throws TemplateModelException {
        Environment env = Environment.getCurrentEnvironment();
        Map map = (Map) FreemarkerHelp.getRootDataModel(env);
        List