presto-connector/src/main/java/com/facebook/presto/maxcompute/MaxComputeColumnHandle.java [29:95]:
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public final class MaxComputeColumnHandle
        implements ColumnHandle
{
    private final String name;
    private final Type type;

    @JsonCreator
    public MaxComputeColumnHandle(
            @JsonProperty("name") String name,
            @JsonProperty("type") Type type)
    {
        this.name = requireNonNull(name, "column name is null");
        this.type = requireNonNull(type, "column type is null");
    }

    public MaxComputeColumnHandle(Column column)
    {
        this.name = column.getName();
        this.type = TypeConvertUtils.toPrestoType(column.getTypeInfo());
    }

    @JsonProperty
    public String getName()
    {
        return name;
    }

    @JsonProperty
    public Type getType()
    {
        return type;
    }

    public ColumnMetadata getColumnMetadata()
    {
        // TODO: support comment, is null and other metadata
        return new ColumnMetadata(name, type);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(name, type);
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }

        MaxComputeColumnHandle other = (MaxComputeColumnHandle) obj;
        return Objects.equals(this.name, other.name) &&
                Objects.equals(this.type, other.type);
    }

    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("type", type)
                .toString();
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trino-connector/src/main/java/io/trino/plugin/maxcompute/MaxComputeColumnHandle.java [29:95]:
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public final class MaxComputeColumnHandle
        implements ColumnHandle
{
    private final String name;
    private final Type type;

    @JsonCreator
    public MaxComputeColumnHandle(
            @JsonProperty("name") String name,
            @JsonProperty("type") Type type)
    {
        this.name = requireNonNull(name, "column name is null");
        this.type = requireNonNull(type, "column type is null");
    }

    public MaxComputeColumnHandle(Column column)
    {
        this.name = column.getName();
        this.type = TypeConvertUtils.toPrestoType(column.getTypeInfo());
    }

    @JsonProperty
    public String getName()
    {
        return name;
    }

    @JsonProperty
    public Type getType()
    {
        return type;
    }

    public ColumnMetadata getColumnMetadata()
    {
        // TODO: support comment, is null and other metadata
        return new ColumnMetadata(name, type);
    }

    @Override
    public int hashCode()
    {
        return Objects.hash(name, type);
    }

    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if ((obj == null) || (getClass() != obj.getClass())) {
            return false;
        }

        MaxComputeColumnHandle other = (MaxComputeColumnHandle) obj;
        return Objects.equals(this.name, other.name) &&
                Objects.equals(this.type, other.type);
    }

    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("name", name)
                .add("type", type)
                .toString();
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