liquibase.nosql.changelog.AbstractNoSqlItemToDocumentConverter Maven / Gradle / Ivy

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Liquibase extension for Cosmos DB via Core (SQL) API

There is a newer version: 4.30.0

package liquibase.nosql.changelog;

import liquibase.ContextExpression;
import liquibase.Labels;

import java.util.Collection;



public abstract class AbstractNoSqlItemToDocumentConverter  {

    public static final String AND = " AND ";
    public static final String COMMA = ",";
    public static final String WHITESPACE = " ";
    public static final String OPEN_BRACKET = "(";
    public static final String CLOSE_BRACKET = ")";

    public abstract D toDocument(I item);

    public abstract I fromDocument(D document);

    public String buildLabels(Labels labels) {
        if (labels == null || labels.isEmpty()) {
            return null;
        }
        return labels.toString();
    }

    public String buildFullContext(final ContextExpression contextExpression, final Collection inheritableContexts) {
        if ((contextExpression == null) || contextExpression.isEmpty()) {
            return null;
        }

        StringBuilder contextExpressionString = new StringBuilder();
        boolean notFirstContext = false;
        for (ContextExpression inheritableContext : inheritableContexts) {
            appendContext(contextExpressionString, inheritableContext.toString(), notFirstContext);
            notFirstContext = true;
        }
        appendContext(contextExpressionString, contextExpression.toString(), notFirstContext);

        return contextExpressionString.toString();
    }

    private void appendContext(StringBuilder contextExpression, String contextToAppend, boolean notFirstContext) {
        boolean complexExpression = contextToAppend.contains(COMMA) || contextToAppend.contains(WHITESPACE);
        if (notFirstContext) {
            contextExpression.append(AND);
        }
        if (complexExpression) {
            contextExpression.append(OPEN_BRACKET);
        }
        contextExpression.append(contextToAppend);
        if (complexExpression) {
            contextExpression.append(CLOSE_BRACKET);
        }
    }
}