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removing useless variables

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removing useless logical conditions
extracted some methods to improve cyclomatic complexity
extracted loop into two pieces to remove extra useless variables and minimize complexity
This commit is contained in:
Guilherme Silveira 2011-10-07 01:22:25 -03:00 committed by Strong Liu
parent f951e15fea
commit 82b167e5f1
1 changed files with 43 additions and 37 deletions
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80
hibernate-core/src/main/java/org/hibernate/hql/internal/QuerySplitter.java
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@ -85,51 +85,38 @@ public static String[] concreteQueries(String query, SessionFactoryImplementor f
ArrayList placeholders = new ArrayList();
ArrayList replacements = new ArrayList();
StringBuffer templateQuery = new StringBuffer( 40 );
int start = getStartingPositionFor(tokens, templateQuery);
int count = 0;
String last = null;
int nextIndex = 0;
String next = null;
boolean isSelectClause = false;
String last = tokens[start - 1].toLowerCase();
templateQuery.append( tokens[0] );
if ( "select".equals( tokens[0].toLowerCase() ) ) isSelectClause = true;
for ( int i = 1; i < tokens.length; i++ ) {
//update last non-whitespace token, if necessary
if ( !ParserHelper.isWhitespace( tokens[i - 1] ) ) last = tokens[i - 1].toLowerCase();
// select-range is terminated by declaration of "from"
if ( "from".equals( tokens[i].toLowerCase() ) ) isSelectClause = false;
for ( int i = start; i < tokens.length; i++ ) {
String token = tokens[i];
if ( !ParserHelper.isWhitespace( token ) || last == null ) {
//scan for next non-whitespace token
if ( nextIndex <= i ) {
for ( nextIndex = i + 1; nextIndex < tokens.length; nextIndex++ ) {
next = tokens[nextIndex].toLowerCase();
if ( !ParserHelper.isWhitespace( next ) ) break;
if ( ParserHelper.isWhitespace( token ) ) {
templateQuery.append( token );
continue;
}
next = nextNonWhite(tokens, i).toLowerCase();
boolean process = isJavaIdentifier( token ) &&
isPossiblyClassName( last, next );
last = token.toLowerCase();
if (process) {
String importedClassName = getImportedClass( token, factory );
if ( importedClassName != null ) {
String[] implementors = factory.getImplementors( importedClassName );
token = "$clazz" + count++ + "$";
if ( implementors != null ) {
placeholders.add( token );
replacements.add( implementors );
}
}
boolean process = !isSelectClause &&
isJavaIdentifier( token ) &&
isPossiblyClassName( last, next );
if (process) {
String importedClassName = getImportedClass( token, factory );
if ( importedClassName != null ) {
String[] implementors = factory.getImplementors( importedClassName );
String placeholder = "$clazz" + count++ + "$";
if ( implementors != null ) {
placeholders.add( placeholder );
replacements.add( implementors );
}
token = placeholder; // Note this!!
}
}
}
templateQuery.append( token );
@ -140,6 +127,25 @@ public static String[] concreteQueries(String query, SessionFactoryImplementor f
return results;
}
private static String nextNonWhite(String[] tokens, int start) {
for ( int i = start + 1; i < tokens.length; i++ ) {
if ( !ParserHelper.isWhitespace( tokens[i] ) ) return tokens[i];
}
return tokens[tokens.length - 1];
}
private static int getStartingPositionFor(String[] tokens, StringBuffer templateQuery) {
templateQuery.append( tokens[0] );
if ( !"select".equals( tokens[0].toLowerCase() ) ) return 1;
// select-range is terminated by declaration of "from"
for (int i = 1; i < tokens.length; i++ ) {
if ( "from".equals( tokens[i].toLowerCase() ) ) return i;
templateQuery.append( tokens[i] );
}
return tokens.length;
}
private static boolean isPossiblyClassName(String last, String next) {
return "class".equals( last ) || (
BEFORE_CLASS_TOKENS.contains( last ) &&