Examples with SpannerDataException org.springframework.cloud.gcp.data.spanner.core.mapping.SpannerDataException used on opensource projects

Example 1 with SpannerDataException

use of org.springframework.cloud.gcp.data.spanner.core.mapping.SpannerDataException in project spring-cloud-gcp by spring-cloud.

the class MappingSpannerReadConverter method instantiate.

private static <R> R instantiate(Class<R> type) {
    R object;
    try {
        Constructor<R> constructor = type.getDeclaredConstructor();
        constructor.setAccessible(true);
        object = constructor.newInstance();
    } catch (ReflectiveOperationException e) {
        throw new SpannerDataException("Unable to create a new instance of entity using default constructor.", e);
    }
    return object;
}

Example 2 with SpannerDataException

use of org.springframework.cloud.gcp.data.spanner.core.mapping.SpannerDataException in project spring-cloud-gcp by spring-cloud.

the class MappingSpannerReadConverter method read.

/**
 * Reads a single POJO from a Spanner row.
 * @param type the type of POJO
 * @param source the Spanner row
 * @param includeColumns the columns to read. If null then all columns will be read.
 * @param <R> the type of the POJO.
 * @return the POJO
 */
public <R> R read(Class<R> type, Struct source, Set<String> includeColumns) {
    boolean readAllColumns = includeColumns == null;
    R object = instantiate(type);
    SpannerPersistentEntity<?> persistentEntity = this.spannerMappingContext.getPersistentEntity(type);
    PersistentPropertyAccessor accessor = persistentEntity.getPropertyAccessor(object);
    persistentEntity.doWithProperties((PropertyHandler<SpannerPersistentProperty>) spannerPersistentProperty -> {
        String columnName = spannerPersistentProperty.getColumnName();
        try {
            if ((!readAllColumns && !includeColumns.contains(columnName)) || source.isNull(columnName)) {
                return;
            }
        } catch (IllegalArgumentException e) {
            throw new SpannerDataException("Unable to read column from Spanner results: " + columnName, e);
        }
        Class propType = spannerPersistentProperty.getType();
        boolean valueSet;
        if (ConversionUtils.isIterableNonByteArrayType(propType)) {
            valueSet = attemptReadIterableValue(spannerPersistentProperty, source, columnName, accessor);
        } else {
            Class sourceType = this.spannerColumnTypeToJavaTypeMapping.get(source.getColumnType(columnName));
            if (sourceType != null && canConvert(sourceType, propType)) {
                valueSet = attemptReadSingleItemValue(spannerPersistentProperty, source, sourceType, columnName, accessor);
            } else {
                valueSet = false;
            }
        }
        if (!valueSet) {
            throw new SpannerDataException(String.format("The value in column with name %s" + " could not be converted to the corresponding property in the entity." + " The property's type is %s.", columnName, propType));
        }
    });
    return object;
}