modules/registry-jpa-generator/src/main/java/generators/AbstractGenerator.java

/**
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package generators;

import java.util.List;

/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 */

public class AbstractGenerator {
    private static final String TAB = "\t";

    protected String removeLastChar(String s) {
        return s.substring(0, s.length() - 1);
    }

    protected String addLines(String s, String... lines) {
        for (String line : lines) {
            s = ((s == null || s.equals("")) ? "" : s + "\n") + line;
        }
        return s;
    }

    protected String convertToJavaTitleCaseStringConvention(String s) {
        String result = "";
        String[] split = s.split("_");
        for (String item : split) {
            result += (item.toUpperCase().substring(0, 1)
                    + (item.length() > 1 ? item.toLowerCase().substring(1) : ""));
        }
        return result;
    }

    protected String convertToJavaVariableNameCaseStringConvention(String s) {
        String result = null;
        String[] split = s.split("_");
        for (String item : split) {
            result = (result == null
                    ? item.toLowerCase()
                    : result
                            + (item.toUpperCase().substring(0, 1)
                                    + (item.length() > 1 ? item.toLowerCase().substring(1) : "")));
        }
        return result;
    }

    protected String convertToJavaConstantNameCaseStringConvention(String s) {
        String result = "";
        for (int i = 0; i < s.length(); i++) {
            String c = String.valueOf(s.charAt(i));
            result += ((c.toUpperCase().equals(c) && !result.equals("")) ? "_" + c : c.toUpperCase());
        }
        return result;
    }

    protected String convertToTitleCaseString(String s) {
        String result = "";
        for (int i = 0; i < s.length(); i++) {
            String c = String.valueOf(s.charAt(i));
            result += ((c.toUpperCase().equals(c) && !result.equals("")) ? " " : "") + c;
        }
        return result;
    }

    protected String tabs(int n) {
        String result = "";
        for (int i = 0; i < n; i++) {
            result += TAB;
        }
        return result;
    }

    protected String commaSeperatedString(List<String> list, String delimiter) {
        String result = null;
        for (String s : list) {
            result = (result == null ? s : result + delimiter + s);
        }
        return result;
    }

    protected String createFieldVarString(String dataType, String fieldName) {
        return "private " + dataType + " " + fieldName + ";";
    }

    protected String createSetterString(int indents, String fieldName, String dataType, String fieldTitleString) {
        String setterString = null;
        setterString = addLines(setterString, tabs(indents));
        setterString = addLines(
                setterString,
                tabs(indents) + "public void set" + fieldTitleString + "(" + dataType + " " + fieldName + ") {");
        setterString = addLines(setterString, tabs(indents + 1) + "this." + fieldName + "=" + fieldName + ";");
        setterString = addLines(setterString, tabs(indents) + "}");
        return setterString;
    }

    protected String createGetterString(int indents, String fieldName, String dataType, String fieldTitleString) {
        String getterString = null;
        getterString = addLines(getterString, tabs(indents));
        getterString =
                addLines(getterString, tabs(indents) + "public " + dataType + " get" + fieldTitleString + "() {");
        getterString = addLines(getterString, tabs(indents + 1) + "return " + fieldName + ";");
        getterString = addLines(getterString, tabs(indents) + "}");
        return getterString;
    }

    protected String createVarNameFromClassName(String s) {
        return s.substring(0, 1).toLowerCase() + s.substring(1);
    }
}