• Home
• info.archinnov
• achilles-cql
• 2.0.13-dse
• source code
• CQLColumnMetaDataComparator.java

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

info.archinnov.achilles.table.CQLColumnMetaDataComparator Maven / Gradle / Ivy

package info.archinnov.achilles.table;

import java.util.List;
import com.datastax.driver.core.ColumnMetadata;
import com.datastax.driver.core.DataType;
import com.datastax.driver.core.TableMetadata;
import com.google.common.collect.ComparisonChain;

public class CQLColumnMetaDataComparator {

    public boolean isEqual(ColumnMetadata source, ColumnMetadata target) {
        boolean isEqual = false;
        final String sourceName = source.getName();
        final TableMetadata sourceTable = source.getTable();
        final DataType sourceType = source.getType();
        final Class sourceClass = sourceType.asJavaClass();
        final List sourceTypeParams = sourceType.getTypeArguments();

        final String targetName = target.getName();
        final TableMetadata targetTable = target.getTable();
        final DataType targetType = target.getType();
        final Class targetClass = targetType.asJavaClass();
        final List targetTypeParams = targetType.getTypeArguments();

        final boolean isPartiallyEqual = ComparisonChain.start()
                                           .compare(sourceName, targetName)
                                           .compare(sourceTable.getName(), targetTable.getName())
                                           .compare(sourceType.getName(), targetType.getName())
                                           .compareFalseFirst(sourceType.isCollection(), targetType.isCollection())
                                           .result() == 0;
        final boolean isSameClass = sourceClass.equals(targetClass);
        final boolean bothHaveTypeParameters = (sourceTypeParams != null && targetTypeParams != null) || (sourceTypeParams == null && targetTypeParams == null);

        isEqual = isPartiallyEqual && isSameClass && bothHaveTypeParameters;
        if(isEqual && sourceTypeParams != null) {
            isEqual = (sourceTypeParams.size() == targetTypeParams.size());
            if(isEqual) {
                for(int i=0; i