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/*
* 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 org.apache.openjpa.lib.identifier;
/**
* Base IdentifierUtil interface. Defines many operations for operating
* on strings using identifier rules.
*/
public interface IdentifierUtil {
String DOUBLE_QUOTE = "\"";
String DOT = ".";
String UNDERSCORE = "_";
String SPACE = " ";
String BAR = "|";
String EMPTY = "";
String PERCENT = "%";
char DOLLAR_CHAR = '$';
char UNDERSCORE_CHAR = '_';
String CASE_UPPER = "upper";
String CASE_LOWER = "lower";
String CASE_PRESERVE = "preserve";
/**
* Get the naming configuration.
*/
IdentifierConfiguration getIdentifierConfiguration();
/**
* Set the naming configuration to use for naming operations. A naming
* configuration must be set before calling any other methods.
*/
void setIdentifierConfiguration(IdentifierConfiguration config);
/**
* Delimit the name if it requires delimiters
* @param rule the rule to use for delimiting
* @param name the name to delimit
* @return the delimited name, if delimiting was necessary.
*/
String delimit(String rule, String name);
/**
* Delimit the name if it requires delimiters
* @param rule the rule to use for delimiting
* @param name the name to delimit
* @return the delimited name, if delimiting was necessary.
*/
String delimit(IdentifierRule rule, String name);
/**
* Delimit the string with the option to force delimiting. If force is
* true, the name will delimited without checking to see if it
* requires delimiters.
* @param rule the rule to use for delimiting
* @param name the name to delimit
* @param force add delimiters even if delimiting is not required
* @return the delimited name, if delimiting was necessary.
*/
String delimit(String rule, String name, boolean force);
/**
* Delimit the string with the option to force delimiting. If force is
* true, the name will delimited without checking to see if it
* requires delimiters.
* @param rule the rule to use for delimiting
* @param name the name to delimit
* @param force add delimiters even if delimiting is not required
* @return the delimited name, if delimiting was necessary.
*/
String delimit(IdentifierRule rule, String name, boolean force);
/**
* Remove delimiters from a delimited name
* @param rule the rule to use for removing delimiters
* @param name the name from which to remove delimiters
*/
String removeDelimiters(String rule, String name);
/**
* Remove delimiters from a delimited name
* @param rule the rule to use for removing delimiters
* @param name the name from which to remove delimiters
*/
String removeDelimiters(IdentifierConfiguration config, String rule, String name);
/**
* Remove delimiters from a delimited name
* @param rule the rule to use for removing delimiters
* @param name the name from which to remove delimiters
*/
String removeDelimiters(IdentifierRule rule, String name);
/**
* Determines whether a name is delimited.
* @param rule the rule to use for removing delimiters
* @param name the name to examine for delimiters
*/
boolean isDelimited(String rule, String name);
/**
* Determines whether a name is delimited.
* @param rule the rule to use for removing delimiters
* @param name the name to examine for delimiters
*/
boolean isDelimited(IdentifierRule rule, String name);
/**
* Determines whether a name requires delimiters based upon:
*
*
The SQL-92 Reference definition of a valid unquoted name
*
The naming rule specified
*
* @param rule the rule to use for removing delimiters
* @param name the name to examine for delimiting requirements
*/
boolean requiresDelimiters(String rule, String name);
/**
* Determines whether a name requires delimiters based upon:
*
*
The SQL-92 Reference definition of a valid unquoted name
*
The naming rule specified
*
* @param rule the rule to use for removing delimiters
* @param name the name to examine for delimiting requirements
*/
boolean requiresDelimiters(IdentifierRule rule, String name);
/**
* Combines names using delimiting rules and appropriate separators
* @return a combined name
* ex. {"TH IS", THAT} -> "TH IS_THAT"
*/
String combineNames(String rule, String[] rules, String[] names);
/**
* Combines names using delimiting rules and appropriate separators
* @return a combined name
* ex. {"TH IS", THAT} -> "TH IS_THAT"
*/
String combineNames(IdentifierRule rule, IdentifierRule[] rules, String[] names);
/**
* Combines names using the specified delimiting rule and appropriate separators
* @return a combined name
* ex. {"TH IS", THAT} -> "TH IS_THAT"
*/
String combineNames(String rule, String[] names);
/**
* Combines names using the specified delimiting rule and appropriate separators
* @return a combined name
* ex. {"TH IS", THAT} -> "TH IS_THAT"
*/
String combineNames(IdentifierRule rule, String[] names);
/**
* Combines two names using delimiting rules and appropriate separators
*/
String combineNames(String rule, String name1, String name2);
/**
* Combines two names using delimiting rules and appropriate separators
*/
String combineNames(IdentifierRule rule, String name1, String name2);
/**
* Joins several names with different naming rules into a single string
* using appropriate delimiters and separators
*/
String joinNames(String[] rules, String[] names);
/**
* Joins several names with different naming rules into a single string
* using appropriate delimiters and separators
*/
String joinNames(IdentifierRule[] rules, String[] names);
/**
* Joins several names with different naming rules into a single string
* using appropriate delimiters and separators
*/
String joinNames(String rule, String[] names);
/**
* Joins several names with different naming rules into a single string
* using appropriate delimiters and separators
*/
String joinNames(IdentifierRule rule, String[] names);
/**
* Joins several names with different naming rules into a single string
* using the specified delimiter
*/
String joinNames(IdentifierRule rule, String[] names, String delimiter);
/**
* Joins several names with different naming rules into a single string
* using the specified delimiter
*/
String joinNames(String rule, String[] names, String delimiter);
/**
* Splits a combined name name using the provided naming rule
* @param name the multi-value name
* @return individual components of the name
* ex. schema.table --> { schema, table }
*/
String[] splitName(String rule, String name);
/**
* Splits a combined name name using the provided naming rule
* @param name the multi-value name
* @return individual components of the name
* ex. schema.table --> { schema, table }
*/
String[] splitName(IdentifierRule rule, String name);
/**
* Splits a combined name name using the provided naming rule and
* delimiter.
* @param name the multi-value name
* @return individual components of the name
* ex. schema.table --> { schema, table }
*/
String[] splitName(String rule, String name, String delimiter);
/**
* Splits a combined name name using the provided naming rule and
* delimiter.
* @param name the multi-value name
* @return individual components of the name
* ex. schema.table --> { schema, table }
*/
String[] splitName(IdentifierRule rule, String name, String delimiter);
/**
* Returns whether a name is considered a reserved word
*/
boolean isReservedWord(String rule, String name);
/**
* Returns whether a name is considered a reserved word
*/
boolean isReservedWord(IdentifierRule rule, String name);
/**
* Convert the string using this naming configuration to the supplied
* naming configuration.
*/
String convert(IdentifierConfiguration config, String rule, String name);
/**
* Truncates a name while maintaining delimiters.
*/
String truncateName(String rule, String name, int length);
/**
* Truncates a name while maintaining delimiters.
*/
String truncateName(IdentifierRule rule, String name, int length);
/**
* Append the names together while maintaining delimiters.
*/
String appendNames(IdentifierRule rule, String name1, String name2);
/**
* Append the names together while maintaining delimiters.
*/
String appendNames(String rule, String name1, String name2);
/**
* Converts a qualified string-based name defined using the base configuration to the
* specified configuration. Returns the converted name.
*/
String convertFull(IdentifierConfiguration config, String rule, String fullName);
/**
* Removes Hungarian notation from the specified string.
*/
String removeHungarianNotation(String rule, String name);
/**
* Removes Hungarian notation from the specified string.
*/
String removeHungarianNotation(IdentifierRule rule, String name);
/**
* Determines whether a name can be split into multiple components.
*/
boolean canSplit(String rule, String name);
/**
* Determines whether a name can be split into multiple components.
*/
boolean canSplit(IdentifierRule rule, String name);
/**
* Determines whether a name can be split into multiple components, taking
* into account the specified delimiter.
*/
boolean canSplit(String rule, String name, String delim);
/**
* Determines whether a name can be split into multiple components, taking
* into account the specified delimiter.
*/
boolean canSplit(IdentifierRule rule, String name, String delim);
}
