import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
public SQLStateConverter(final ViolatedConstraintNameExtracter extracter) {
	super();
	final ConversionContext conversionContext = new ConversionContext() {
		@Override
		public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
			return extracter;
		}
	};
	addDelegate( new SQLStateConversionDelegate( conversionContext ) );
}
 

import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
@Override
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
	return hsqldbVersion < 20 ? EXTRACTER_18 : EXTRACTER_20;
}
 

import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
	return EXTRACTER;
}
 

import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
@Override
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
	return EXTRACTER;
}
 

import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
@Override
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
    return EXTRACTER;
}
 

import org.hibernate.exception.spi.ViolatedConstraintNameExtracter; //导入依赖的package包/类
@Override
public ViolatedConstraintNameExtracter getViolatedConstraintNameExtracter() {
	return this.wrapped.getViolatedConstraintNameExtracter();
}