hotfix 签署方获取

黄潞潞

2024-06-07 482f807361c9bc0dce2db949a29c755cf858548b

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package foundation.data.object;
 
import java.util.Set;
 
import foundation.data.meta.field.FieldsRuntime;
import foundation.util.CaseInsensitiveSet;
import foundation.util.ContentBuilder;
import foundation.variant.provider.DataEvent;
import foundation.variant.provider.IVariantsProvider;
import foundation.variant.provider.VariantProviderType;
 
public class DataObjectVariantsProvider implements IVariantsProvider {
 
    private static Set<String> names;
    private DataObject dataObject;
    
    static {
        init();
    }
    
    public DataObjectVariantsProvider(DataObject dataObject) {
        this.dataObject = dataObject;
    }
    
    @Override
    public String getProviderName() {
        return DataObject.class.getSimpleName();
    }
 
    @Override
    public VariantProviderType getProviderType() {
        return VariantProviderType.Persist;
    }
 
    public boolean containsVariant(String name) {
        return names.contains(name);
    }
 
    @Override
    public Object getVariantValue(DataEvent dataEvent, String name) {
        if (name == null) {
            return null;
        }
        
        name = name.toLowerCase();
        
        try {
            if ("tablename".equals(name)) {
                return dataObject.getTableName();
            }
            else if ("fieldnames".equals(name)) {
                FieldsRuntime fieldsRuntime = dataObject.getTableFieldMetas();
                int size = fieldsRuntime.getFieldCount();
                String[] fieldNames = fieldsRuntime.getFieldNames();
                
                ContentBuilder builder = new ContentBuilder(", ");
                
                for (int i = 0; i < size; i++) {
                    builder.append(fieldNames[i]);
                }
                
                return builder.toString();
            }
            else if ("placeholders".equals(name)) {
                FieldsRuntime fieldsRuntime = dataObject.getTableFieldMetas();
                int size = fieldsRuntime.getFieldCount();
                
                ContentBuilder builder = new ContentBuilder(", ");
                
                for (int i = 0; i < size; i++) {
                    builder.append("?");
                }
                
                return builder.toString();
            }
        }
        catch (Exception e) {
        }
 
        return null;
    }
 
    @Override
    public Set<String> getVariantNames() {
        return names;
    }
 
    private static void init() {
        names = new CaseInsensitiveSet();
        names.add("tablename");
        names.add("fieldNames");
        names.add("placeHolders");
    }
 
}